If the Earth had four times its present mass, what would be its new period of revolution around the sun, compared to its present orbital period?
A) two times as much
B) one-fourth as much
C) four times as much
D) one-half as much
E) the same
Question 2
A quark can have a charge of
A) -3/2 e.
B) -e/2.
C) -1/3 e.
D) -e/4.
E) -3/4 e.