A uniform meter stick is pivoted at the 75-cm mark and hangs vertically. If it is displaced from equilibrium by a small amount and then released, what is the period of the resulting oscillations?
A)
2.01 s
B)
1.26 s
C)
1.53 s
D)
1.00 s
E)
1.74 s
C
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A boat hits a sandbar and slides some distance before coming to rest. Which of the arrows shown below best represents the direction of the boat’s acceleration as it is sliding? (Hint: Draw a motion diagram.)
A. A
B. B
C. C
D. D
E. E
F. F
T. Zero
A circuit consists of N resistors, all of resistance R, connected as shown below. A potential difference V is applied to the circuit. The equivalent resistance of the circuit is
a.
.
b.
R.
c.
Water flows over a 2-m-wide flat plate with the same velocities as in Problem 4 in the mini-exam for Section 4.4 where we found v = 0.0667 m/s. The frictional force F acting on the horizontal surface is nearest:
(A) 1300 N
(B) 1500 N
(C) 1700 N
(D) 1900 N
General Questions: An elevator suspended by a vertical cable is moving downward but slowing down. The tension in the cable must be
A. greater than the weight of the elevator. B. less than than the weight of the elevator. C. equal to the weight of the elevator.