The rest mass of a photon is zero kg
Indicate whether the statement is true or false
TRUE
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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.
When our Earth becomes tidally locked with the Moon, which of the following statements will be true?
A. An astronaut on the Moon would see only one side of Earth. B. The Moon will not go through phases. C. The Moon will only be visible during the day. D. There will be no eclipses.
The idea of continental drift was not generally accepted when Wegener proposed it because
a. the Bible did not support it. b. Wegener was a meteorologist, not a geologist. c. Wegener was not well known. d. no satisfactory mechanism was proposed.
A 75.0-kg halfback running north with a speed of 11.0 m/s is tackled by a 80.5-kg opponent running south at 7.5 m/s. The collision is perfectly inelastic. Compute the velocity of the two players just after the tackle
a. 9.2 m/s south b. 1.4 m/s south c. 1.4 m/s north d. 40 m/s north e. 9.2 m/s north