A depression on the land surface caused by the collapse of a cavern is called
a. a sinkhole.
b. a shrink pit.
c. a culvert.
d. none of the above.
a
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Newton's Second Law in 1 Dimension: On its own, a tow truck has a maximum acceleration of 3.0 m/s2. What will be its maximum acceleration when the truck is using a light horizontal chain to tow a bus of twice its own mass?
A. 2.5 m/s2 B. 2.0 m/s2 C. 1.5 m/s2 D. 1.0 m/s2
Center of Mass: A 60.0-kg man stands at one end of a 20.0-kg uniform 10.0-m long board. How far from the man is the center of mass (or center of gravity) of the man-board system?
A. 1.25 m B. 2.50 m C. 5.00 m D. 7.50 m E. 9.00 m
A ball is thrown straight up into the air. Its position at 7 instants of time are shown in the figure; the maximum height is reached at position 4. At which of the labeled points is the acceleration of the ball smallest?
Is it possible to have a zero electric field value between two positive charges along the line joining the two charges?
A) Yes, if the two charges are equal in magnitude. B) Yes, regardless of the magnitude of the two charges. C) No, a zero electric field cannot exist between the two charges. D) cannot be determined without knowing the separation between the two charges E) cannot be determined without knowing the magnitude of the charges