Electric potential, measured in volts, is the ratio of electric energy to the amount of electric
A) current.
B) resistance.
C) charge.
D) voltage.
E) none of the above
Answer: C
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A. the same. B. twice as much. C. half as much. D. four times as much. E. one-fourth as much.
Why use nuclear power on a satellite?
a. It can supply energy for many years on long space missions. b. Solar cells don't work well in the outer solar system far from the Sun. c. Sending radioactive materials into space is a good way to get rid of them so they don't create a hazard on Earth. d. all of the above
What is the change in entropy of the ice when a 0.050-kg ice cube at 0°C melts? The latent heat of fusion for water is 80 cal/g
What will be an ideal response?
A projectile is launched from ground level at an angle of 70.0° above horizontal with a speed of 50.0 m/s. If the projectile is moving over level ground, how far way from the launch position does it contact the ground?
A) 164 m B) 54.2 m C) 203 m D) 102 m E) 12.4 m