Two satellites with equal rest masses are traveling toward each other in deep space. One is traveling at 0.550c and the other at 0.750c. The satellites collide and somehow manage to stick together
What is the speed of the combined object after the collision? A) 0.100c
B) 0.113c
C) 0.150c
D) 0.175c
E) 0.311c
D
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A stone is thrown horizontally from the top of a tower at the same instant that a ball is dropped vertically. Which object is traveling faster when it hits the level ground below?
A) Neither, since both are traveling at the same speed. B) It is impossible to tell from the information given. C) the ball D) the stone
A sensitive ammeter is connected to a wire loop and placed within the magnetic field of a strong horseshoe magnet. The ammeter shows a deflection when:
a. the wire is moved parallel to the field. b. neither wire nor magnet is moving. c. the wire's axis is parallel to the field. d. the wire is moved perpendicularly to the field.
Bulbs A, B, C, and D are identical and connected to a battery as shown. The bulb with the least current passing through it is
A. bulb C. B. bulb A. C. both bulbs A and B. D. both bulbs C and D.
In a helium-neon laser the emissions occur from transitions between two excited states in neon, one being at 20.66 eV above the ground state and the other being 18.70 eV above ground. What is the energy of the photons emitted by this laser?
A) 20.66 eV B) 1.96 eV C) 18.70 eV D) 19.60 eV E) 39.36 eV