A system consisting of a positively-charged particle and an electric field
a. loses potential difference and kinetic energy when the charged particle moves in the direction of the field. b. loses electric potential energy when the charged particle moves in the direction of the field. c. loses kinetic energy when the charged particle moves in the direction of the field. d. gains electric potential energy when the charged particle moves in the direction of the field. e. gains potential difference and electric potential energy when the charged particle moves in the direction of the field.
B
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Electromagnetic waves can be produced by
A) electric charges moving with constant velocity. B) electric charges at rest. C) electric charges in accelerated motion. D) All of the previous answers are correct. E) None of the previous answers is correct.
Which force can act over distances comparable to the distance between planets?
a. only gravitational b. only electrical c. only magnetic d. All of the above.
Why might some choose a "soft" energy path, while others choose a "hard" path? Explain their respective reasons
What will be an ideal response?
In what direction did the heat flow in this experiment?