Consider the following circuit
The capacitor is uncharged when the switch is closed at t = 0. Which circuit is equivalent to this circuit for the instant immediately after the switch is closed?
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The equivalent capacitance of the circuit shown below is
a.
0.2 C.
b.
0.4 C.
c.
1 C.
d.
4 C.
e.
5 C.
The quantity "moment of inertia" (in terms of the fundamental quantities of mass, length, and time) is equivalent to:
a. ML2T-2. c. ML2. b. ML. d. ML-1T-2.
An object of mass m is attached to a horizontal spring, stretched to a displacement A from equilibrium and released, undergoing harmonic oscillations on a frictionless surface. The experiment is then repeated with a mass of 4m. Compared to the original total mechanical energy, the subsequent total mechanical energy of the object with mass 4m is
1.greater. 2.less. 3.equal.
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.