In a collision between a huge SUV and a small hybrid car, the SUV exerts a larger force on the hybrid than the hybrid exerts on the SUV
A) True
B) False
C) It depends on whether the collision is a head-on collision or a rear-end collision.
B
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Dimensional Analysis: The gravitational force of attraction F between two tiny masses m1 and m2 that are separated by a distance r is F = G 
. In the SI system, force has units of kg ? m/s2 . Use the given gravitational force formula to determine the SI units of G in terms of the fundamental quantities of mass, length, and time.
Fill in the blank(s) with the appropriate word(s).
Suppose you are looking down on a disk that is spinning counterclockwise. If we apply an upward torque to the disk, its angular speed
A. Increases. B. Decreases. C. Remains the same
How did the Ptolemaic model explain the apparent retrograde motion of the planets?
A) The planets moved along small circles that moved on larger circles around Earth. B) The planets sometimes stopped moving and then reversed to move backward along their circular orbits. C) The model showed that apparent retrograde motion occurs as Earth passes by another planet in its orbit of the Sun. D) The planets resided on giant spheres that sometimes turned clockwise and sometimes turned counterclockwise.
The theory proposing light as a particle is supported by
1.the sparks created in Hertz' experiment with the spark gap oscillator. 2.the speed of light turning up in Maxwell's equations. 3.the interference caused by light in Young's double slit experiment. 4.the photoelectric effect Hertz discovered.