# HW#13a Note: numbers used in solution steps are different from your WebAssign values. Page 1 of 6

Save this PDF as:

Size: px
Start display at page:

Download "HW#13a Note: numbers used in solution steps are different from your WebAssign values. Page 1 of 6"

## Transcription

1 Note: numbers used in solution steps are different from your WebAssign values. Page 1 of 6 1. Walker3 16.P.006. One day you notice that the outside temperature increased by 24 F between your early morning jog and your lunch at noon. What is the corresponding change in temperature in each of the following scales? (a) Celsius 13 C (b) Kelvin 13 K Here when they say save size they mean same size of steps. Temperature difference in Kelvin is the same as temperature difference in Celsius. While the step size of Celsius is 9/5 times of step size of Fahrenheit. 2. Walker3 16.P.005. [565713] The temperature at a particular spot on the surface of the Sun is 6000 K. (a) Convert this temperature to the Celsius scale C (b) Convert this temperature to the Fahrenheit scale F 3. Walker3 16.P.013. [565953] A steel suspension-bridge is 3910 m long. How much longer is the bridge on a warm summer day (30 C) than on a cold winter day (-5.00 C)? 1.6m

2 Note: numbers used in solution steps are different from your WebAssign values. Page 2 of 6 4. Walker3 16.P.017. [565938] Early in the morning, when the temperature is 5.0 C, gasoline is pumped into a car's 51 L steel gas tank until it is filled to the top. Later in the day the temperature rises to 25 C. Since the volume of gasoline increases more for a given temperature increase than the volume of the steel tank, gasoline will spill out of the tank. How much gasoline spills out in this case? 0.93 L 5. Walker3 16.P.024. [565886] During a workout, a person repeatedly lifts a 18.2 lb barbell through a distance of 1.5 ft. How many "reps" of this lift are required to burn off 150 Cal? 25467

3 Note: numbers used in solution steps are different from your WebAssign values. Page 3 of 6 6. Walker3 16.P.036. [565880] A blacksmith drops a 0.50 kg iron horseshoe into a bucket containing 25 kg of water. (a) If the initial temperature of the horseshoe is 450 C, and the initial temperature of the water is 23 C, what is the equilibrium temperature of the system? Assume no heat is exchanged with the surroundings. 24 C c water = 4186(J/(kg*K)) Initial T water and T hs are known c hs_iron =448(J/(kg*K)) The final temperature T has to be more than T water and less than T hs In this case, water absorbs heat and iron gives off heat. Amount of heat absorbed by water = Q water = c (w) *m (w) *( T- T water ) Amount of heat given off from hs = Q hs =c (hs) *m (hs) *( T (hs) -T) Q (w) = Q (hs) ; because the system doesn t exchange heat with outside. Above we considered the absolute value and made sure to use the higher Temp to minus the lower T. Actually, by definition, Q = c m (T f -T i ). Q(w) must be positive and Q(hs) is negative. Since the system doesn t exchange heat with outside, we have Q(w)+ Q(hs)= 0; It is the same equation as, Q (w) = Q (hs), when you use absolute value. The heat given off by iron horseshoes is equal to the heat absorbed by water. Ok, so we have c (w) *m (w) *( T- T i(w) )+ c (hs) *m (hs) *( T -T i(hs) )=0 Or c (w) *m (w) *( T- T i(w) ) = c (hs) *m (hs) *( T i(hs) -T) You can start to plug in numbers and solve T * 25 *( T- 23) * (0.5) *( T-450)=0; T= (448*0.5* *25*23)/(448* *25)=24 C. (notice that this kind of result: and conclusions and will not be given in exams. ) You need to understand and really learn that Q(w)+ Q(hs)= 0; or Q(w) = Q(hs) ; Then, you are able to write: c (w) *m (w) *( T- T i(w) )+ c (hs) *m (hs) *( T -T i(hs) )=0, or even when there are more than 2 objects. Also please notice, when calculate the exchanged heat, only the temperatures difference between initial and final state were used. And from question 1, you know that 1 degree of Celsius difference is equal to 1 Kevin of difference. It is Ok to use both Celsius or Kelvin scale in this question. But when Temperature T itself is used, instead of temperature change is used, you have to convert Celsius into Kelvin.

4 Note: numbers used in solution steps are different from your WebAssign values. Page 4 of 6 (b) Suppose the 0.45 kg iron horseshoe had been a 1.0 kg lead horseshoe instead. Would the equilibrium temperature in this case be greater than, less than, or the same as in part (a)? ---Select--- less The more mass or the higher specific heat the harder to change its temperature, the larger the heat capacity is. When specific heat of the high temperature block is the same, the one with more mass will contribute more to water s temperature raise. When mass is the same the material with more specific heat can contribute more to the temperature raise. When both mass and spesfic heat are not the same, we compare their product, the heat capacity. Heat capacity is the combined effects of the object s mass and specific heat. Heat capacity = mass *specific heat 7. Walker3 16.P.035. [566083] To determine the specific heat of an object, a student heats it to 100 C in boiling water. She then places the 38.0 g object in a 155 g aluminum calorimeter containing 103 g of water. The aluminum and water are initially at a temperature of 20.0 C, and are thermally insulated from their surroundings. If the final temperature is 22.0 C, what is the specific heat of the object? 385 J/(kg C) Referring to Table 16-2 in your text, identify the material in the object.

5 Note: numbers used in solution steps are different from your WebAssign values. Page 5 of 6 8. Walker3 16.P.040. [565737] Assuming your skin temperature is 37.2 C and the temperature of your surroundings is 21.8 C, determine the length of time required for you to radiate away the energy gained by eating a 306 Calorie ice cream cone. Let the emissivity of your skin be and its area be 1.22 m hours 9. Walker3 16.P.042. [565738] Consider a double-paned window consisting of two panes of glass, each with a thickness of cm and an area of m 2, separated by a layer of air with a thickness of 1.75 cm. The temperature on one side of the window is 0.00 C; the temperature on the other side is 20.0 C. In addition, note that the thermal conductivity of glass is roughly 36 times greater than that of air. (a) Approximate the heat transfer through this window by ignoring the glass. That is, calculate the heat flow per second through the 1.75 cm of air with a temperature difference of 20.0 C. (The exact result for the complete window is 23.4 J/s.) Express your answer with three significant digits J/s (b) Use the approximate heat flow found in part (a) to find an approximate temperature difference across each pane of glass. (The exact result is C.) Express your answer with three significant digits C

6 Note: numbers used in solution steps are different from your WebAssign values. Page 6 of 6 Because we know it was mainly the air which separated the hot and code T. Part A assumes the Temperature distribution is like the left figure. Based on that you can find Q/t of the total heat flow rate. In part B, they ask us to use the Q/t heat flow rate we just found in part A to calculate the temperature difference crossing each of the glass panes, under such a heat flow rate. In part B, the Temperature distribution looks like the right figure. As we will find later, that the delta T across a glass pane is around 0.2 C which is mush less than 20C. As a result the assumption we used in part be was pretty accurate. Notice that because the thermal conductivity of air is really small, the heat flow per second is not too much,and we are able to use such a heat flow rate, (19.4 J/s) keep the temperature difference across the air layer to be 20 C deference, which is 36 Fahrenheit deference. But thermal conductivity of glass is much higher (about 35 times higher), in order to keep the temperature difference using a single layer of glass with same thickness, the heat flow per second will be 35 times more. We will have to use a huge heater to maintain such a heat flow in order to keep the room much warmer than outside. The glasses were used to trap the insulating air layer, so that there is no convection. Suppose we don t have a huge heater, but use double layer window, and the heat flow through the window will just be the same as we just calculated before, 19.4 J per second. We can now calculate the temperature difference across one single glass layer, at such a low heat lose rate. And we found that the temperature difference across the glass layer is really small. 1, This means our assumption in A was good enough. 2, This means if we do not have a powerful heater and we can only supply small heat losing rate: 19.4 J per second, and we only have one layer of glass on the window (no insulating air layer), the Temperature of both side of the window will be very close. Too cold..

### Temperature Scales. temperature scales Celsius Fahrenheit Kelvin

Ch. 10-11 Concept Ch. 10 #1, 3, 7, 8, 9, 11 Ch11, # 3, 6, 11 Problems Ch10 # 3, 5, 11, 17, 21, 24, 25, 29, 33, 37, 39, 43, 47, 59 Problems: CH 11 # 1, 2, 3a, 4, 5, 6, 9, 13, 15, 22, 25, 27, 28, 35 Temperature

### Heat Transfer. Phys101 Lectures 35, 36. Key points: Heat as Energy Transfer Specific Heat Heat Transfer: Conduction, Convection, Radiation

Phys101 Lectures 35, 36 Heat Transfer Key points: Heat as Energy Transfer Specific Heat Heat Transfer: Conduction, Convection, Radiation Ref: 16-1,3,4,10. Page 1 19-1 Heat as Energy Transfer We often speak

### Chapter 4: Transfer of Thermal Energy

Chapter 4: Transfer of Thermal Energy Goals of Period 4 Section 4.1: To define temperature and thermal energy Section 4.2: To discuss three methods of thermal energy transfer. Section 4.3: To describe

### Chapter 18 Temperature, Heat, and the First Law of Thermodynamics. Problems: 8, 11, 13, 17, 21, 27, 29, 37, 39, 41, 47, 51, 57

Chapter 18 Temperature, Heat, and the First Law of Thermodynamics Problems: 8, 11, 13, 17, 21, 27, 29, 37, 39, 41, 47, 51, 57 Thermodynamics study and application of thermal energy temperature quantity

### Thermodynamics is the study of heat. It s what comes into play when you drop an ice cube

Chapter 12 You re Getting Warm: Thermodynamics In This Chapter Converting between temperature scales Working with linear expansion Calculating volume expansion Using heat capacities Understanding latent

### Phys222 W11 Quiz 1: Chapters 19-21 Keys. Name:

Name:. In order for two objects to have the same temperature, they must a. be in thermal equilibrium.

### Chapter 10 Temperature and Heat

Chapter 10 Temperature and Heat GOALS When you have mastered the contents of this chapter, you will be able to achieve the following goals: Definitions Define each of the following terms, and use it an

### Energy. Work. Potential Energy. Kinetic Energy. Learning Check 2.1. Energy. Energy. makes objects move. makes things stop. is needed to do work.

Chapter 2 Energy and Matter Energy 2.1 Energy Energy makes objects move. makes things stop. is needed to do work. 1 2 Work Potential Energy Work is done when you climb. you lift a bag of groceries. you

### REASONING AND SOLUTION

39. REASONING AND SOLUTION The heat released by the blood is given by Q cm T, in which the specific heat capacity c of the blood (water) is given in Table 12.2. Then Therefore, T Q cm 2000 J 0.8 C [4186

### What Is Heat? What Is Heat?

What Is Heat? Paul shivered inside the wood cabin. It was cold outside, and inside the cabin it wasn t much warmer. Paul could hear the rain beating down on the roof. Every few minutes there would be a

### Name: Class: Date: 10. Some substances, when exposed to visible light, absorb more energy as heat than other substances absorb.

Name: Class: Date: ID: A PS Chapter 13 Review Modified True/False Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true. 1. In all cooling

### UNIT 6a TEST REVIEW. 1. A weather instrument is shown below.

UNIT 6a TEST REVIEW 1. A weather instrument is shown below. Which weather variable is measured by this instrument? 1) wind speed 3) cloud cover 2) precipitation 4) air pressure 2. Which weather station

### Final Exam. Wednesday, December 10. 1:30 4:30 pm. University Centre Rooms

16.102 Final Exam Wednesday, December 10 1:30 4:30 pm University Centre Rooms 210 224 30 questions, multiple choice The whole course, equal weighting Formula sheet provided 26 Lab and Tutorial Marks Final

### 2. Room temperature: C. Kelvin. 2. Room temperature:

Temperature I. Temperature is the quantity that tells how hot or cold something is compared with a standard A. Temperature is directly proportional to the average kinetic energy of molecular translational

### The First Law of Thermodynamics

The First aw of Thermodynamics Q and W are process (path)-dependent. (Q W) = E int is independent of the process. E int = E int,f E int,i = Q W (first law) Q: + heat into the system; heat lost from the

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Sample Mid-Term 3 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) If you double the frequency of a vibrating object, its period A) is quartered.

### Chapter 16 Temperature and Heat

The determination of temperature has long been recognized as a problem of the greatest importance in physical science. It has accordingly been made a subject of most careful attention, and, especially

### Chapter 10: Temperature and Heat

Chapter 10: Temperature and Heat 1. The temperature of a substance is A. proportional to the average kinetic energy of the molecules in a substance. B. equal to the kinetic energy of the fastest moving

### Forms of Energy. Freshman Seminar

Forms of Energy Freshman Seminar Energy Energy The ability & capacity to do work Energy can take many different forms Energy can be quantified Law of Conservation of energy In any change from one form

### dm 3. dm 3 ) b Find the buoyant force (noste) on the stone when immersed in water. B = r f Vg)

CHAPTER 9 1 Archimedes Law The magnitude of the buoyant force always equals the weight of the fluid displaced by the object Noste nesteessä on yhtä suuri kuin syrjäytetyn nestemäärän paino. Hpätee myös

### Measuring Temperature

Measuring Temperature The standard metric unit of temperature is the degree Celsius ( C). Water freezes at 0 C. Water boils at 100 C. The Fahrenheit scale is used only in the United States. Why Do We Need

### Project 1.3.4 Renewable Insulation Example Teacher Notes

Project 1.3.4 Renewable Insulation Example Teacher Notes Sample Data and Teacher Notes This guide is designed to provide sample calculations, background, and tips for the teachers performing this project

### Thermodynamics AP Physics B. Multiple Choice Questions

Thermodynamics AP Physics B Name Multiple Choice Questions 1. What is the name of the following statement: When two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium

### The Three Heat Transfer Modes in Reflow Soldering

Section 5: Reflow Oven Heat Transfer The Three Heat Transfer Modes in Reflow Soldering There are three different heating modes involved with most SMT reflow processes: conduction, convection, and infrared

### Q = mc T f T i ) Q = mc T)

Problem Solving with Heat Heat is quite a complex concept. Heat can be effected by how much of the substance there is, what temperature the substance is at, and what the substance is. We need a unit define

### 5 Answers and Solutions to Text Problems

Energy and States of Matter 5 Answers and Solutions to Text Problems 5.1 At the top of the hill, all of the energy of the car is in the form of potential energy. As it descends down the hill, potential

### Chapter 2 Matter and Energy

1 Chapter 2 Matter and Energy Matter Matter is the material that makes up all things is anything that has mass and occupies space is classified as either pure substances or mixtures Pure Substances A pure

1/7 2009/11/14 上 午 11:10 Manage this Assignment: Chapter 16 Due: 12:00am on Saturday, July 3, 2010 Note: You will receive no credit for late submissions. To learn more, read your instructor's Grading Policy

### Calorimetry Lab - Specific Heat Capacity

Introduction Calorimetry Lab - Specific Heat Capacity Experience tells us that if a hot piece of metal is added to water, the temperature of the water will rise. If several different metals having the

### Temperature. Temperature

Chapter 8 Temperature Temperature a number that corresponds to the warmth or coldness of an object measured by a thermometer is a per-particle property no upper limit definite limit on lower end Temperature

### Worksheet #17. 2. How much heat is released when 143 g of ice is cooled from 14 C to 75 C, if the specific heat capacity of ice is 2.087 J/(g C).

Worksheet #17 Calculating Heat 1. How much heat is needed to bring 12.0 g of water from 28.3 C to 43.87 C, if the specific heat capacity of water is 4.184 /(g? 2. How much heat is released when 143 g of

### Global Warming and Greenhouse Gases Reading Assignment

What is global warming? Global Warming and Greenhouse Gases Imagine you live in a timber shack in Alaska. It's chilly up there, so you build yourself a huge log fire and pile on all the wood you can find.

### Calculating Heat Loss by Mark Crombie, Chromalox

Calculating Heat Loss by Mark Crombie, Chromalox Posted: January 30, 2006 This article deals with the basic principles of heat transfer and the calculations used for pipes and vessels. By understanding

### TEACHER BACKGROUND INFORMATION THERMAL ENERGY

TEACHER BACKGROUND INFORMATION THERMAL ENERGY In general, when an object performs work on another object, it does not transfer all of its energy to that object. Some of the energy is lost as heat due to

### Practice Test. 4) The planet Earth loses heat mainly by A) conduction. B) convection. C) radiation. D) all of these Answer: C

Practice Test 1) Increase the pressure in a container of oxygen gas while keeping the temperature constant and you increase the A) molecular speed. B) molecular kinetic energy. C) Choice A and choice B

### Energy Flow in Marine Ecosystem

Energy Flow in Marine Ecosystem Introduction Marin ecosystem is a functional system and consists of living groups and the surrounding environment It is composed of some groups and subgroups 1. The physical

### Use tongs and wear goggles when removing the samples from the pot of boiling water. Protect your eyes against accidental splashes!

Calorimetry Lab Purpose: Students will measure latent heat and specific heat. PLEASE READ the entire handout before starting. You won t know what to do unless you understand how it works! Introduction:

### Heat and Temperature: Front End Evaluation Report. Joshua Gutwill. October 1999

Heat and Temperature: Front End Evaluation Report Joshua Gutwill October 1999 Keywords: 1 Heat and Temperature Front End Evaluation Report October 28, 1999 Goal:

### 2.0 Heat affects matter in different ways

2.0 Heat affects matter in different ways 2.1 States of Matter and The Particle Model of Matter Matter is made up of tiny particles and exists in three states: solid, liquid and gas. The Particle Model

### c. Applying the first law of thermodynamics from Equation 15.1, we find that c h c h.

Week 11 homework IMPORTANT NOTE ABOUT WEBASSIGN: In the WebAssign versions of these problems, various details have been changed, so that the answers will come out differently. The method to find the solution

### The student knows that matter has measurable physical properties and those properties determine how matter is classified, changed, and used.

TEKS 5.5B The student knows that matter has measurable physical properties and those properties determine how matter is classified, changed, and used. The student is expected to: (B) identify the boiling

### Answer, Key Homework 6 David McIntyre 1

Answer, Key Homework 6 David McIntyre 1 This print-out should have 0 questions, check that it is complete. Multiple-choice questions may continue on the next column or page: find all choices before making

### CHAPTER 7 THE SECOND LAW OF THERMODYNAMICS. Blank

CHAPTER 7 THE SECOND LAW OF THERMODYNAMICS Blank SONNTAG/BORGNAKKE STUDY PROBLEM 7-1 7.1 A car engine and its fuel consumption A car engine produces 136 hp on the output shaft with a thermal efficiency

### UNIT (1) MEASUREMENTS IN CHEMISTRY

UNIT (1) MEASUREMENTS IN CHEMISTRY Measurements are part of our daily lives. We measure our weights, driving distances, and gallons of gasoline. As a health professional you might measure blood pressure,

### Practice Problems on Conservation of Energy. heat loss of 50,000 kj/hr. house maintained at 22 C

COE_10 A passive solar house that is losing heat to the outdoors at an average rate of 50,000 kj/hr is maintained at 22 C at all times during a winter night for 10 hr. The house is to be heated by 50 glass

### Transferring Solar Energy

activity 14 Transferring Solar Energy BROWARD COUNTY ELEMENTARY SCIENCE BENCHMARK PLAN Grade 4 Quarter 2 Activity 14 SC.B.1.2.2 The student recognizes various forms of energy (e.g., heat, light, and electricity).

### 1. At which temperature would a source radiate the least amount of electromagnetic energy? 1) 273 K 3) 32 K 2) 212 K 4) 5 K

1. At which temperature would a source radiate the least amount of electromagnetic energy? 1) 273 K 3) 32 K 2) 212 K 4) 5 K 2. How does the amount of heat energy reflected by a smooth, dark-colored concrete

### The Sun and Water Cycle

reflect Have you ever jumped in a puddle or played in the rain? If so, you know you can get very wet. What you may not know is that a dinosaur could have walked through that same water millions of years

### Energy and Energy Transformations Test Review

Energy and Energy Transformations Test Review Completion: 1. Mass 13. Kinetic 2. Four 14. thermal 3. Kinetic 15. Thermal energy (heat) 4. Electromagnetic/Radiant 16. Thermal energy (heat) 5. Thermal 17.

### Heat and Temperature. Temperature Scales. Thermometers and Temperature Scales

Heat and Temperature Thermometers and Temperature Scales The mercury-based one you see here relies on the fact that mercury expands at a predictable rate with temperature. The scale of the thermometer

### ConcepTest 17.1Degrees

ConcepTest 17.1Degrees Which is the largest unit: one Celsius degree, one Kelvin degree, or one Fahrenheit degree? 1) one Celsius degree 2) one Kelvin degree 3) one Fahrenheit degree 4) both one Celsius

### Reversible & Irreversible Processes

Reversible & Irreversible Processes Example of a Reversible Process: Cylinder must be pulled or pushed slowly enough (quasistatically) that the system remains in thermal equilibrium (isothermal). Change

### THERMAL CONDUCTIVITY APPARATUS

Includes Teacher's Notes and Typical Experiment Results Instruction Manual and Experiment Guide for the PASCO scientific Model TD-8561 012-03349D 5/94 THERMAL CONDUCTIVITY APPARATUS 1987 PASCO scientific

### ENERGY. Thermochemistry. Heat. Temperature & Heat. Thermometers & Temperature. Temperature & Heat. Energy is the capacity to do work.

ENERGY Thermochemistry Energy is the capacity to do work. Chapter 6 Kinetic Energy thermal, mechanical, electrical, sound Potential Energy chemical, gravitational, electrostatic Heat Heat, or thermal energy,

### Heat as Energy Transfer. Heat is energy transferred from one object to another because of a difference in temperature

Unit of heat: calorie (cal) Heat as Energy Transfer Heat is energy transferred from one object to another because of a difference in temperature 1 cal is the amount of heat necessary to raise the temperature

### Sustainable Living Student Worksheets

Sustainable Living Student Worksheets Stage 4 Design & Technology FW4DT1 Name: Introduction Renewable Versus Non-renewable Energy The Sun is a Primary Source of Energy Almost all the energy needed to keep

### Laws of Thermodynamics

Laws of Thermodynamics Thermodynamics Thermodynamics is the study of the effects of work, heat, and energy on a system Thermodynamics is only concerned with macroscopic (large-scale) changes and observations

### Q1. (a) The graph shows the temperature inside a flat between 5 pm and 9 pm. The central heating was on at 5 pm.

Q. (a) The graph shows the temperature inside a flat between 5 pm and 9 pm. The central heating was on at 5 pm. (i) What time did the central heating switch off? () (ii) Closing the curtains reduces heat

### Name Class Date STUDY GUIDE FOR CONTENT MASTERY

Atmosphere SECTION 11.1 Atmospheric Basics In your textbook, read about the composition of the atmosphere. Circle the letter of the choice that best completes the statement. 1. Most of Earth s atmosphere

### EXPERIMENT 16: Charles Law of Gases V vs T

EXPERIMENT 16: Charles Law of Gases V vs T Materials: Thermometer Bunsen burner Ring stand Clamps 600ml beakers (2) Closed-tip syringe Ice Water Objectives 1. To put to work the model to verify Charles

### ES 106 Laboratory # 2 HEAT AND TEMPERATURE

ES 106 Laboratory # 2 HEAT AND TEMPERATURE Introduction Heat transfer is the movement of heat energy from one place to another. Heat energy can be transferred by three different mechanisms: convection,

### AP Chem Lab 2 Quiz #1 Calorimetry. Conceptual Understanding. Write complete sentences to show your understanding.

AP Chem Lab 2 Quiz #1 Calorimetry Name Conceptual Understanding. Write complete sentences to show your understanding. Differentiate between kinetic energy and potential energy. Energy may be transferred

### Humidity, Evaporation, and

Humidity, Evaporation, and Boiling Bởi: OpenStaxCollege Dew drops like these, on a banana leaf photographed just after sunrise, form when the air temperature drops to or below the dew point. At the dew

### Specific Heat Capacity and Latent Heat Questions A2 Physics

1. An electrical heater is used to heat a 1.0 kg block of metal, which is well lagged. The table shows how the temperature of the block increased with time. temp/ C 20.1 23.0 26.9 30.0 33.1 36.9 time/s

Consumer Report: 5 Things You Must Know Before Buying Radiant Barrier 1 INDEX I: How Do Radiant Barriers Really Work pg 3 A: Understanding Heat Transfer pg 3 B: How Radiant Barriers Stop the Heat pg 4

### Heat evolved by the reaction = Heat absorbed by the water + Heat absorbed by the bomb

ENERGY OF A PEANUT AN EXPERIMENT IN CALORIMETRY 2011, 2010, 2002, 1995, by David A. Katz. All rights reserved. Reproduction permitted for educational use provided original copyright is included. INTRODUCTION:

### Name Date Class THERMOCHEMISTRY. SECTION 17.1 THE FLOW OF ENERGY HEAT AND WORK (pages 505 510)

17 THERMOCHEMISTRY SECTION 17.1 THE FLOW OF ENERGY HEAT AND WORK (pages 505 510) This section explains the relationship between energy and heat, and distinguishes between heat capacity and specific heat.

### THERMOCHEMISTRY & DEFINITIONS

THERMOCHEMISTRY & DEFINITIONS Thermochemistry is the study of the study of relationships between chemistry and energy. All chemical changes and many physical changes involve exchange of energy with the

### SOLAR ENERGY FUNDAMENTALS

Radiantec SOLAR ENERGY FUNDAMENTALS G E N E R A L S U P P L E M E N T 420 by Radiantec Company What is Solar Energy? What is the Sun? The sun is a star, not much different from the billions of others in

### Wasting Hot Water Wastes Energy

CON EDISON WEB-BASED MIDDLE SCHOOL ACTIVITY Wasting Hot Water Wastes Energy Overview In this activity, your students will consider the cost of energy in water heating, an area they may not realize accounts

### The Ideal Gas Law. Gas Constant. Applications of the Gas law. P = ρ R T. Lecture 2: Atmospheric Thermodynamics

Lecture 2: Atmospheric Thermodynamics Ideal Gas Law (Equation of State) Hydrostatic Balance Heat and Temperature Conduction, Convection, Radiation Latent Heating Adiabatic Process Lapse Rate and Stability

### PARADISE VALLEY COMMUNITY COLLEGE PHYSICS 101 - INTRODUCTION TO PHYSICS LABORATORY. Calorimetry

PARADISE VALLEY COMMUNITY COLLEGE PHYSICS 101 - INTRODUCTION TO PHYSICS LABORATORY Calorimetry Equipment Needed: Large styrofoam cup, thermometer, hot water, cold water, ice, beaker, graduated cylinder,

### L A T E N T H E A T O F F U S I O N

Class Date Name Partner(s) L A T E N T H E A T O F F U S I O N Materials LoggerPro Software and Real Time Physics Thermodynamics Experiment Files Stainless Steel Temperature Probes (2) Styrofoam Cup Film

### Chapter 10 Temperature and Heat

Chapter 10 Temperature and Heat What are temperature and heat? Are they the same? What causes heat? What Is Temperature? How do we measure temperature? What are we actually measuring? Temperature and Its

### 1. The following information is from a leaflet produced by a double-glazing company.

Heating and insulating buildings 1. The following information is from a leaflet produced by a double-glazing company. Change your single-glazed windows to our energy-efficient double glazed windows and

### Tsawwassen BC Arena Before & After installation of the Low-E ceiling

LOW EMISSIVITY CEILINGS Emissivity- Describes the ability of a certain material to radiate heat rather then absorb it. Materials that radiate 100% have an (EM) of 1.0, while materials that radiate no heat

### Heating and cooling. Insulation. Quick facts on insulation:

Heating and cooling Heating and cooling your home can be one of the biggest users of energy. Efficency in this area can bring great savings. Heating and cooling depend on many contributing factors. The

### Year 10 Investigation. What Makes Ice Melt Fastest? By Rebecca Hogan

Investigation What Makes Ice Melt Fastest? MY WEBSITE: http://whatsubstancemeltsicefastest.weebly.com/ Nature of Investigation: What keeps us cool on hot days? What is used in our cool, refreshing beverages?

### Module 3.8. Window U-value

Module 3.8 Window U-value Learning Outcomes On successful completion of this module learners will be able to - Describe the concept of U-values and alternative energy rating system for windows. 2 Calculation

### q = (mass) x (specific heat) x T = m c T (1)

Experiment: Heat Effects and Calorimetry Heat is a form of energy, sometimes called thermal energy, which can pass spontaneously from an object at a high temperature to an object at a lower temperature.

### Rusty Walker, Corporate Trainer Hill PHOENIX

Refrigeration 101 Rusty Walker, Corporate Trainer Hill PHOENIX Compressor Basic Refrigeration Cycle Evaporator Condenser / Receiver Expansion Device Vapor Compression Cycle Cooling by the removal of heat

### Expansion and Compression of a Gas

Physics 6B - Winter 2011 Homework 4 Solutions Expansion and Compression of a Gas In an adiabatic process, there is no heat transferred to or from the system i.e. dq = 0. The first law of thermodynamics

### CHAPTER 5 Lectures 10 & 11 Air Temperature and Air Temperature Cycles

CHAPTER 5 Lectures 10 & 11 Air Temperature and Air Temperature Cycles I. Air Temperature: Five important factors influence air temperature: A. Insolation B. Latitude C. Surface types D. Coastal vs. interior

### Energy Conversions I. Unit of measure (most common one) Form Definition Example

Energy Conversions I Energy can take many forms, but any one form can usually be converted into another. And no matter what form we talk about, we can use conversion factors to calculate equivalent amounts

### Kinetic Theory & Ideal Gas

1 of 6 Thermodynamics Summer 2006 Kinetic Theory & Ideal Gas The study of thermodynamics usually starts with the concepts of temperature and heat, and most people feel that the temperature of an object

### (Walter Glogowski, Chaz Shapiro & Reid Sherman) INTRODUCTION

Convection (Walter Glogowski, Chaz Shapiro & Reid Sherman) INTRODUCTION You know from common experience that when there's a difference in temperature between two places close to each other, the temperatures

### scale absolute zero triple point boiling point Fahrenheit F 32.0 F F Celsius C 0.0 C C Kelvin 0.0 K K 373.

, Temperature, and Heat September 8, 2009 Chapter 2:, Temperature, and Heat The subject of thermodynamics is as old as the hills -- well, not quite. was born in the 17th century. It's central task was

### THE STUDY OF THE EFFECT OF DRY ICE ON THE TEMPERATURE OF WATER

THE STUDY OF THE EFFECT OF DRY ICE ON THE TEMPERATURE OF WATER Justin Tunley Cary Academy ABSTRACT: The purpose of this study was to find out how much the temperature of water would change over time after

Thermochemistry Reading: Chapter 5 (omit 5.8) As you read ask yourself What is meant by the terms system and surroundings? How are they related to each other? How does energy get transferred between them?

### Figure 2.1: Warm air rising from SAPREF stacks, October 2002 Source: GroundWork

13 CHAPTER TWO SOME CONCEPTS IN CLIMATOLOGY 2.1 The Adiabatic Process An important principle to remember is that, in the troposphere, the first layer of the atmosphere, temperature decreases with altitude.

### How Do Oceans Affect Weather and Climate?

How Do Oceans Affect Weather and Climate? In Learning Set 2, you explored how water heats up more slowly than land and also cools off more slowly than land. Weather is caused by events in the atmosphere.

### Heat Energy FORMS OF ENERGY LESSON PLAN 2.7. Public School System Teaching Standards Covered

FORMS OF ENERGY LESSON PLAN 2.7 Heat Energy This lesson is designed for 3rd 5th grade students in a variety of school settings (public, private, STEM schools, and home schools) in the seven states served

### The Thermometer. Key Stage 3 Science. Cross Curricular KS3 History Shipbuilding.

The Thermometer AGE RANGES: 12-14 TASK: OBJECTIVES: Explore how a liquid changes its volume relative to its temperature. Students design their own bulb thermometer for testing in the classroom. Investigate

### What is Energy? What is the relationship between energy and work?

What is Energy? What is the relationship between energy and work? Compare kinetic and potential energy What are the different types of energy? What is energy? Energy is the ability to do work. Great, but

### Water to Vapor; Water to Ice The Process Is Amazing

Science Project Idea 8 th -Grade Energy Water to Vapor; Water to Ice The Process Is Amazing Setting the Scene: Holding On To Heat If you leave a cup of cold water on a counter, it will warm up very quickly.

### Section 7. Laws of Thermodynamics: Too Hot, Too Cold, Just Right. What Do You See? What Do You Think? Investigate.

Chapter 6 Electricity for Everyone Section 7 Laws of Thermodynamics: Too Hot, Too Cold, Just Right What Do You See? Learning Outcomes In this section, you will Assess experimentally the final temperature

### Temperature Scales. The metric system that we are now using includes a unit that is specific for the representation of measured temperatures.

Temperature Scales INTRODUCTION The metric system that we are now using includes a unit that is specific for the representation of measured temperatures. The unit of temperature in the metric system is