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Title: Find the momentum and speed of a proton whose kinetic energy equals its rest energy. (The mass of a ... Post by: emilyhoffman on Feb 23, 2018 Find the momentum and speed of a proton whose kinetic energy equals its rest energy. (The mass of a proton is 938.3 MeV/c2).
[Ques. 2] The diameter of the Moon is approximately a. 800 mi. b. 239,000 mi. c. 93,000,000 mi. d. 2200 mi. [Ques. 3] For total internal reflection, light is ______________ and none is ______________. a. refracted; reflected b. refracted; transmitted c. reflected; transmitted d. transmitted; reflected [Ques. 4] In a color television tube, electrons are accelerated through a potential difference of 20000 volts. With what velocity do the electrons strike the screen? [Ques. 5] If a person weighs 252 lb on Earth, what will the person weigh on the Moon? a. 42 lb b. 1512 lb c. 252 lb d. 126 lb e. 25.2 lb [Ques. 6] The photoreceptors responsible for twilight vision are called a. rods. b. cylinders. c. cones. d. cans. [Ques. 7] When at rest, a spacecraft has the same height as length. When moving at relativistic speeds in the direction of its length, which one of the following describes its length and height to an observer at rest? a. Its length is decreased and its height is increased. b. Its length is decreased and its height is decreased. c. Its length is decreased and its height is unchanged. d. Its length is unchanged and its height is increased. e. Its length is increased and its height is decreased. [Ques. 8] If a person weighs 150 lb on Earth, what will the person weigh on the Moon? a. 25 lb b. 900 lb c. 150 lb d. 75 lb e. 300 lb [Ques. 9] The photoreceptors responsible for color vision are called a. rods. b. cylinders. c. cones. d. cans. [Ques. 10] Lydia proposes to send an interstellar probe off in stages. The first stage, traveling radially outward at 0.500 c relative to Earth, will send off a second stage traveling in the same direction as the first stage at a speed of 0.500 c relative to the first stage. Finally, the second stage will send off a third stage traveling in the same direction at 0.500 c relative to the second stage. Relative to Earth, the speed of the third stage will have a magnitude of a. 0.500 c. b. 0.800 c. c. 0.929 c. d. 0.972 c. e. 1.500 c. Title: Find the momentum and speed of a proton whose kinetic energy equals its rest energy. (The mass of a ... Post by: BradenMaloy10 on Feb 23, 2018 Title: Find the momentum and speed of a proton whose kinetic energy equals its rest energy. (The mass of a ... Post by: emilyhoffman on Feb 23, 2018 :white_check_mark:
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