At Mach 10, if all the energy of a meteorite went into heating the meteorite, its temperature would be about
A. 300C
B. 6000C
c. 30,000 c
D. 100,000 C
Answer: c. 30,000 c
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A child is standing at the rim of a rotating disk holding a rock. The disk rotates freely without friction. If the rock is dropped at the instant shown, which of the indicated paths most nearly represents the path of the rock as seen from above the disk?
Two bodies of equal mass m collide and stick together. The quantities that always have equal magnitude for both masses during the collision are
a. their changes in momentum. b. the force each exerts on the other. c. their changes in kinetic energy. d. all of the above. e. only (a) and (b) above.
Mass on a Spring: A 2.0 kg box is traveling at 5.0 m/s on a smooth horizontal surface when it collides with and sticks to a stationary 6.0 kg box. The larger box is attached to an ideal spring of force constant (spring constant) 150 N/m, as shown in the figure. Find (a) the amplitude of the resulting oscillations of this system, (b) the frequency of the oscillations and (c) the period of the oscillations.
What will be an ideal response?
Inductive Reactance is actually a consequence of
A) Gauss's Law. B) Coulomb's Law. C) Faraday's Law. D) Newton's Law.