PHY 101 Week 3 Individual Assignment Textbook Exercises

PHY 101 Week 3 Individual Assignment Textbook Exercises Recent

Chapter 15: 3 & 7

3. In a glass of water at room temperature, do all the molecules have the same speed?

7. Which has the greater amount of internal energy—an iceberg or a cup of hot coffee? Defend your answer

7. What is the purpose of a layer of copper or aluminum on the bottom of stainless steel cookware

21. Your friend states that the average speed of all hydrogen and nitrogen molecules in a gas is the same. Do you agree or disagree, and why

41. Since energy is radiated by all objects, why can’t we see them in the dark?

Chapter 17: 3 & 38

3. When you step out of a swimming pool on a hot, dry day in the Southwest, you feel quite chilly. Why?

 

38. In the power plant of a nuclear submarine, the temperature of the water in the reactor is above 100°C. How is this possible?

Chapter 18: 3, 4, 7, 36 & 46

3. When heat flows from a warm object in contact with a cool object, do both objects undergo the same amount of temperature change?

4. Heat always flows spontaneously from an object with a higher temperature to an object with a lower temperature. Is this the same thing as saying that heat always flows from an object with a greater internal energy to one with a lower internal energy? Explain

7. When air is quickly compressed, why does its temperature increase

36. Is the total energy of the universe becoming more unavailable with time? Explain

46. It is generally assumed that perpetual motion machines are impossible to construct. Is it inconsistent to say that molecules are in perpetual motion