The fact that the strength of gravity decreases with distance means the force of gravity exerted by one object on another (e.g., the Earth and Moon) is greater on the near side than the far side. This effect is commonly referred to as a
A) tidal force
B) differential force
C) distortive force
D) tractive force
A
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The primary mirrors of most radio telescopes is similar to the primary mirror of a reflecting optical telescope in that
a. they are both concave in shape. b. they are both convex in shape. c. they are typically the same size. d. they are both made of metal. e. they have nothing in common.
The velocity of bulk sound waves in brass is 2,813 m/s. If the density of brass is 
then what is the bulk modulus of brass?
a. 
b. 
c. 
d. 
e. 
What makes a transition from a lower energy state to a higher energy state when a photon is absorbed into an atom?
A) proton B) neutron C) electron D) photon E) graviton
The quantum mechanical model of the hydrogen atom requires that if the orbital quantum number of the hydrogen atom is 7, there will be how many permitted orbital magnetic quantum numbers?
a. 6 b. 7 c. 14 d. 15 e. 49