What does Einstein's general theory of relativity tell us about two co-orbiting white dwarfs?
A) They will emit gravitational waves that carry energy and angular momentum away from the system, causing the white dwarfs to gradually spiral inward toward each other and eventually merge.
B) They will emit gravitational waves that carry energy and angular momentum toward the system, causing the white dwarfs to gradually spiral away from one another and eventually fly far apart.
C) They will emit gravitational waves that carry energy and angular momentum away from the system, causing the white dwarfs to quickly spiral away from one another.
D) They will never interact with one another.
A
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A 3.0-kg mass sliding on a frictionless surface has a velocity of 5.0 m/s east when it undergoes a one-dimensional inelastic collision with a 2.0-kg mass that has an initial velocity of 2.0 m/s west. After the collision the 3.0-kg mass has a velocity of 1.0 m/s east. How much kinetic energy does the two-mass system lose during the collision?
A. 22 J B. 24 J C. 26 J D. 20 J E. 28 J
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Light with a wavelength of 310 nm is incident on a metal that has a work function of 3.80 eV. What is the maximum kinetic energy that a photoelectron ejected in this process can have?
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