Which of the following represents the longest distance?
a. One parsec
b. One astronomical unit
c. One light-year
d. One right ascension
a
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Calculate the linear speed due to the Earth's rotation for a person at the equator of the Earth. The radius of the Earth is 6.40 × 10^6 m
a. 74.0 m/s c. 465 m/s b. 233 m/s d. 73.0 m/s
Two wires, each having a weight per unit length of 1.0 × 10^-4 N/m, are strung parallel, one 0.10 m above the other. If the wires carry the same current, though in opposite directions, how great must the current in each wire be for the magnetic field of the lower conductor to balance the weight of the upper conductor?
An object starts from rest with an acceleration of 2.0 
for 3.0 seconds. It then reduces its acceleration to 1.0 
for 5.0 additional seconds. The total distance covered is
A. 52 m. B. 38 m. C. 11 m. D. 9.0 m. E. 7.6 m.
Kinetic energy
A. Depends only on the mass of the object B. Depends on the speed and the mass of the object C. Depends on only the speed of the object D. Is not in this chapter