How will an isolated, one solar-mass star die?
A) as a neutron star
B) as a black hole
C) as a white dwarf supernova
D) as a white dwarf
E) uncertain, since stars can die in any number of ways
D
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Which of the following has the shortest wavelength?
a) Visible light b) Gamma Ray c) Ultraviolet d) Radiowaves
Two charged particles repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is halved, then the force will be
A) F. B) 2 F. C) F/2. D) F/4. E) none of the above
A space tow barge pushes on a spaceship with a rest mass of 15,000 kg and accelerates it from a speed of 0.600c to a speed of 0.700c. How much work does the tow barge have to do to accomplish this?
A) 1.35 × 1020 J B) 2.03 × 1020 J C) 2.70 × 1020 J D) 5.42 × 1020 J E) 8.78 × 1019 J
You whirl a 2-kg body attached to a 1-meter cord around your head in a nearly horizontal circle with a speed of 4 m/s. The tension in the cord is
a. 2 N. b. 4 N. c. 8 N. d. 16 N. e. 32 N.