# Physical Science

## Chapter 4: Energy

### Solve a Simple Equation

 1. What is the gravitational potential energy of a ceiling fan that has a mass of 12 kg and is 3 m above the ground? A) 235 J B) 353 J C) 392 J D) 441 J 2. What is the gravitational potential energy of a ceiling fan that has a mass of 10 kg and is 4 m above the ground? A) 235 J B) 353 J C) 392 J D) 441 J 3. What is the gravitational potential energy of a ceiling fan that has a mass of 8 kg and is 3 m above the ground? A) 235 J B) 353 J C) 392 J D) 441 J 4. What is the gravitational potential energy of a ceiling fan that has a mass of 9 kg and is 5 m above the ground? A) 235 J B) 353 J C) 392 J D) 441 J 5. What is the mass of a hiker 350 m above the ground if her GPE is 120,200 J. A) 35 kg B) 37 kg C) 42 kg D) 57 kg 6. What is the mass of a hiker 300 m above the ground if her GPE is 116,000 J. A) 30 kg B) 39 kg C) 32 kg D) 35 kg 7. What is the mass of a hiker 250 m above the ground if her GPE is 140,250 J. A) 50 kg B) 54 kg C) 57 kg D) 60 kg 8. What is the mass of a hiker 350 m above the ground if her GPE is 180,000 J. A) 57 kg B) 50 kg C) 47 kg D) 52 kg 9. Find the GPE of a coffee mug with a mass of 0.4 kg on a 1.2-m high counter top. A) 3 J B) 5 J C) 7 J D) 10 J 10. Find the GPE of a coffee mug with a mass of 0.6 kg on a 1.4-m high counter top. A) 10 K B) 8 J C) 6 J D) 5 J