According to the principle of equivalence, observations made of falling objects at Galileo's Leaning Tower of Pisa are indistinguishable from observations made in
A) a spaceship orbiting in a gravitational field.
B) a spaceship accelerating at g in deep space.
C) any uniformly moving reference frame.
D) all of the above
E) none of the above
Answer: B
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If a force is applied parallel to a reinforcing phase of a composite material, the elastic modulus is calculated with the rule of _________.
Fill in the blank(s) with the appropriate word(s).
Which moon has a thick atmosphere made mostly of nitrogen?
A) Titan B) Triton C) Ganymede D) Europa
Two balls, one of radius R and mass M, the other of radius 2R and mass 8M, roll down an incline. They start together from rest at the top of the incline. Which one will reach the bottom of the incline first?
A) The small sphere B) Both reach the bottom together. C) The large sphere D) It depends on the height of the incline. E) It depends on the length of the inclined surface.
A piston compresses a gas, while at the same time heat is lost to the surroundings. The temperature of the gas rises. This is governed by the __________ law of thermodynamics
Fill in the blank(s) with correct word