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System Energy & Power Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. How do we know that gravitational potential energy exists?

Question 2 2. A 10 kg bowling ball is lifted from the ground to a height of 1 meter. Assuming the bowling alley is on Earth, how much gravitational potential energy does it now have?

Question 3 3. If a car is rolling naturally downhill without the engine running, what energy transfer is happening?

Question 4 4. You lift a 3kg dumbbell from the ground until it is above your head, at a height of 1.5 meters. How much energy did you use in the process? (Assume that you're not a space alien, and your gym is on Earth.)

Question 5 5. A bike resting at the top of a hill would be an example of what type of energy?

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Question 6 6. To which of the following variables is kinetic energy proportional?

Question 7 7. Different types of energy can be categorized as either kinetic or potential.

Question 8 8. Consider a ball at the end of a string. If the ball is swinging back and forth, at what point in the swing would the ball have the most potential energy?

Question 9 9. Which of the following is the formula for elastic potential energy?

Question 10 10. Elastic potential energy is the energy an object has in it due to being what?

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Question 11 11. Both the equations for Hooke's law, and elastic potential energy have a constant called the spring constant in them. What is the spring constant?

Question 12 12. To find the formula for elastic potential energy of a spring we need to know the spring constant and the displacement of the spring. What exactly do we mean by displacement of the spring?

Question 13 13. Which of the following conversion factors is correct?

Question 14 14. If 1 cal = 4.186 J, how many joules is 10,000 calories?

Question 15 15. If you cook something in your 2,000 W microwave for 2 hours, how many kWh did it use?

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Question 16 16. A Btu is the amount of heat needed to ___the temperature of ___ of water by ___.

Question 17 17. What is the standard unit of power?

Question 18 18. Which best describes 'power'?

Question 19 19. How much power is required to do 100 J of work in 10 s?

Question 20 20. Which of the following scenarios requires more power?

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Question 21 21. Which of the following is a common unit that is used to measure energy?

Question 22 22. Which of the following types of energy does the sun use to heat up our atmosphere?

Question 23 23. Which of the following is an example of mechanical energy?

Question 24 24. Which of the following is the best definition for energy?

Question 25 25. Which of the following objects has the most gravitational potential energy?

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Question 26 26. Which of the following is an example of potential energy and not kinetic energy?

Question 27 27. Why is Hooke's law important for finding elastic potential energy?

Question 28 28. If 1 Btu = 252 cal, how many Calories are in 10 Btu?

Question 29 29. To do twice as much work in the same amount of time, how much power is required?

Question 30 30. Which of the following is a property of energy?

System Energy & Power Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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