Textbook Question
Discuss the changes in the potential and kinetic energy of a roller-coaster ride as the roller-coaster car climbs to the top and goes down the other side.
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7. Energy, Rate and Equilibrium
Nature of Energy
Multiple Choice
An energy efficient refrigerator uses 780 kWh of electrical energy per year. How many kilocalories of electricity does it use in three years?
A
2.0 x 106 kcal
B
8.3 x 105 kcal
C
2 x 106 kcal
D
8.3 x 106 kcal
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