PHY 200 Physical Science

Assignment 2.2 Chapter 5

Answer the following questions, discuss each short answer questions. Make sure to show your work. Note: Chapter equations are available in your Lecture 4 slides and book.

Short Answer

1. When the temperature changes during the day, which scale, Fahrenheit, Celsius, or Kelvin, will have the greater degree change?

1. If a substance has a relatively high specific heat, what does that tell you about heating and cooling the object?

1. Why is copper used to cover the bottom of many commercial aluminum pots and pans?

1. What happens to the atoms and molecules in an object when its temperature increases?

Exercise

1. While in Europe, a tourist hears on the radio that the temperature that day will reach a high of 25C. What is this temperature on the Fahrenheit scale?

1. A person is running a temperature of 38C. What is the temperature on the Fahrenheit scale?

1. The temperature of outer space is about 3K. What is this temperature on (a) the Celsius scale? (b) on the Fahrenheit scale?

EXTRA CREDIT: How much heat in kcal must be added to 0.50 kg of water at room temperature (20C) to raise its temperature to 30C ?