When you look at yourself in a pocket mirror, and then hold the mirror farther away, you see
A) more of yourself.
B) less of yourself.
C) the same amount of yourself.
Answer: C
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Viscosity: Two horizontal pipes have the same diameter, but pipe B is twice as long as pipe A. Water undergoes viscous flow in both pipes, subject to the same pressure difference across the lengths of the pipes. If the flow rate in pipe B is Q = 
what is the flow rate in pipe A?
A. 2Q
B. 4Q
C. 8Q
D. 16Q
E. Q
A 600-kg car is going around a curve with a radius of 120 m that is banked at an angle of 20° with a speed of 24.5 m/s. What is the minimum coefficient of static friction required for the car not to skid?
A) 0.12 B) 0.24 C) 0.36 D) 0.48 E) 0.60
In a wet and humid climate, the mineral halite will succumb to weathering more easily than granite because
A) granite is more resistant. B) halite readily dissolves in water. C) halite is relatively soft (hardness of 2.5). D) all of the above.
If the speed of an object in uniform circular motion is tripled while the radius remains constant the centripetal acceleration is multiplied by a factor of
A. 9 B. 3 C. 1 D. 1/3 E. 1/9