A pendulum swings through a total of 28 degrees. If the displacement is equal on each side of the equilibrium position, what is the amplitude of this vibration?
a. 28
b. 14
c. 56
Ans: b. 14
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Two copper wires have electric fields with identical strengths in their interior directed along the wire. Wire 1 has twice the diameter of wire 2. How do the currents carried by the wires compare?
A. 
B. 
C. 
D. 
E. 
F. We can’t compare using only the given information.
In a negatively-curved Universe (like the surface of a saddle), the angles of a triangle add up to
A. exactly 180 degrees. B. less than 180 degrees. C. more than 180 degrees.
A car travels north at 30 m/s for one half hour. It then travels south at 40 m/s for 15 minutes. The total distance the car has traveled and its displacement are:
A. 18 km; 18 km S. B. 36 km; 36 km S. C. 36 km; 36 km N. D. 90 km; 18 km N. E. 90 km; 36 km N.
The force due to gravity between two objects can be described using the equation Fg = G M1 M2 / d2. In this equation, what does d represent?
A) the density of the smaller object B) the distance between the two objects C) the universal gravitational constant