What is the difference between energy and power?
A) Power is the rate at which energy is used, so its units are a unit of energy divided by a unit of time.
B) Power is measured in joules and energy is measured in watts.
C) Power is used to describe energy of light, while the term energy has a broader meaning.
D) There's no difference: Energy and power are different names for the same thing.
A
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Energy and Mass: During a reaction, 170 µJ of energy is released. What change of mass would accompany this release? (c = 3.0 × 108 m/s)
A. 5.1 × 10-4 kg B. 1.5 × 10-13 kg C. 4.8 × 10-18 kg D. 1.9 × 10-21 kg
Contrast the destinations of the probes dispatched by the Galileo and Cassini missions
What will be an ideal response?
When a positive charge is released and moves along an electric field line, it moves to a position of
a. lower potential and lower potential energy. b. lower potential and higher potential energy. c. higher potential and lower potential energy. d. higher potential and higher potential energy. e. greater magnitude of the electric field.
The Precambrian witnessed the development of
A) the first atmosphere. B) the ozone layer. C) photosynthesis. D) photosynthesis, an oxygenated atmosphere, and the ozone layer.