Chapter 3:

1. What is the scientific definition for “work”?

2. Give an example where the force is not zero but work is zero.

3. Give an example where the force and distance are both non-zero but work is zero.

4. What is the unit for work?

5. What is the unit for energy?

6. What is the unit for power?

7. If an object has mass 2 kg, moves at a speed of 1.5 m/sec, what is its kinetic energy? Express your answer in Joules.

8. If an object has mass 2 kg, sitting at a building 15 meters up the ground level. What is its gravitational potential energy? Express your answer in Joules.

9. If an object has mass 2 kg, what is its energy associated with its mass? Express your answer in Joules.

10. What is the formula that relate mass and energy? Who discovered it?

11. Textbook, 4th edition, P 83; 5th edition, P 69. “Problems” 1.

Chapter 4:

1. What are the three temperature systems?

2. Convert 100 F to Celsius.

3. What is absolute zero?

4. What is absolute zero in Celsius?

5. What are the boiling and freezing temperature of water in F?

6. What are the boiling and freezing temperature of water in K?

Subject | Science |

Due By (Pacific Time) | 06/25/2013 12:00 am |

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