When a perched water table intersects the surface on a hillside, the result is
A) an artesian well.
B) a spring.
C) a lake.
D) a cone of depression.
Answer: B
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Two objects of different masses have momentum of equal, non-zero magnitude. Which object has more kinetic energy?
A) the heavier object B) the lighter object C) They both have the same kinetic energy.
A bird, accelerating from rest at a constant rate, experiences a displacement of 25 m in 12 s. What is its acceleration?
a. 0.18 m/s2 b. 0.35 m/s2 c. 0.44 m/s2 d. 0.26 m/s2 e. 0.53 m/s2
Which of the following represents a case in which you are not accelerating?
A) going from 0 to 60 miles per hour in 10 seconds B) driving in a straight line at 60 miles per hour C) slamming on the brakes to come to a stop at a stop sign D) driving 60 miles per hour around a curve
A cell phone is placed 40 cm in front of a convex lens with a focal length of magnitude 20 cm. How far is the image of this phone from the lens?
A) 40 cm B) 20 cm C) 13 cm D) 60 cm E) 10 cm