In a circuit made up of inductor, resistance, ammeter, battery and switch in series, at which of the following times after the switch is closed is the rate of current increase greatest?
a. zero
b. one time constant
c. reciprocal of one time constant
d. ten time constants
a
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Whether or not a planet like Mercury can hold a particular gas in its atmosphere depends on that planet's
a. ice cap. b. craters. c. escape velocity. d. its distance from the Sun as manifested in the temperature of the atmosphere. e. escape velocity and its distance from the Sun as manifested in the temperature of the atmosphere.
A photosphere appears on a protostar near the end of stage
A) 1. B) 2. C) 3. D) 6. E) 7.
Dimensional Analysis: In Einstein's famous equation E = mc2, describing the relationship between matter and energy, E stands for energy, m stands for mass, and c is the speed of light in vacuum. What are the SI units of E?
A. kg/s B. kg/s2 C. kg ? m/s2 D. s2 / (kg ? m) E. kg ? m2 / s2
Which object produces a restoring force?
A. Rubber band B. All of these C. Spring D. Steel beam E. Leg bone