University:
Cypress College
Course:
PHYS 201 C | College Physics I
Academic year:

2021
Views:

15

Pages:

23
Author:

NikkiP24

Chapter 7: Thermal Properties of Matter EXERCISES (PAGE 140 Exercises 01.00 | Page 140 Choose the correct option. Range of temperature in a clinical thermometer, which measures the temperature of the human body, is 1. 70°C to 100°C 2. 34°C to 42C 1 0°F to 100°F 4. 34°F to 80 F SOLUTION 34°C to 42° C Exercises 01:00 | Page 140 Choose the correct option. A glass bottle completely filled with water is kept in the freezer. Why does it crack? 1. Bottle gets contracted 2. Bottle is expanded 1. Water expands on freezing 4. Water contracts on freezing SOLUTION Water expands on freezing Exercises QT. 010 | Page 140 Choose the correct option. If two temperatures differ by 25° C on Celsius scale, the difference in temperature on Fahrenheit scale is 1.65 2 45 138 4. 25 SOLUTIO 45 Explanation: 100 divisions on celsius scale comespond to 180 divisains on fahrenheit scale divisions will comespond to 100 45 divisions on Fahrenheit scale ie. 45° F. Temperature difference of 25° C. Le. 25 25 188 Exercises Q1. (0)| Page 148 Choose the correct option. If o, andy are coefficients of linear, area 1 and volume expansion of a solid then 30-23:1 4. By 3:12 SOLUTION αβγ 1:2:3 Exercises Q1.00| Page 140 Choose the correct option. Consider the following statements The coefficient of linear expansion has dimension K (1)The coefficient of volume expansion has dimension K 1. Land are hoth sorrect 2. Tis conect but it is wrong 3. It is comect but I is wrong 4. (and il are both wrong SOLUTIKIN Tandil are both comect Esercises Page 140 Choose the correct option Water falls from a hight of 200 m. What is the diffuruncs in temperature between the water at the top and bottom of a waterfall given that the specific heat of water is 42003 kg C-17 1.0.96°C 2. 102 C 1048 C 4 116 C SOLUTION 0.46 C 3 Explanation: The potential energy at height kinetic energy at bottom Assuming all kinetic energy is converted into heal, Let AT be the rise in lamparature of water observed at the bottom mgh = ms AT AT gh 9.8200 0.467 C 4200 Exercises Q20Page 140 Answer the following question. Clearly, stuite the difference between heat and temperature? SOLUTION Heat 1. Temperature Heat is energy in transit. When two bodies at different semperatures are brought in contact, they exchange heat Temperature is a physical quantity that defines the thermodynamic state of a system OR Heat is the form of energy sansfamed between two or more) systems ora system and its sumundings by virtue of their semperature difference. OR Heat transfer takes place between the body and the surrounding medium until the body and the surrounding mediumane at the same temperature. Heat exchange can be measured with the Temperature is measured with the help of a calorimeter help of a thermometer Heat (being a form of energy) is a denved Temperature is a fundamental quantity quantity 5.3. unit joule) Dimension: MTK 5.1. unit: Kefvin) Dimension: LMTK 2