When a charged particle is moved along an electric field line,

a. the electric field does no work on the charge. b. the electrical potential energy of the charge does not change. c. the electrical potential energy of the charge undergoes the maximum change in magnitude. d. the voltage changes, but there is no change in electrical potential energy.
e. the electrical potential energy undergoes the maximum change, but there is no change in voltage.


C

Physics & Space Science

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An object is placed in front of a thin lens. Which statements are correct in describing the image formed by the lens?

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When light is either reflected or refracted, the quantity that does not change in either process is its

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A satellite that is in a circular orbit 230 km above the surface of the planet Zeeman-474 has an orbital period of 89 min. The radius of Zeeman-474 is 6.38 × 106 m. What is the mass of this planet? (G = 6.67 × 10-11 N ? m2/kg2 )

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Physics & Space Science