A spherical air bubble originating from a scuba diver at a depth of 30.0 m has a diameter of 1.0 cm. What will the bubble's diameter be when it reaches the surface? (Assume constant temperature.)
a. 0.7 cm
c. 1.4 cm
b. 1.0 cm
d. 1.6 cm
D
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On the H-R diagram, the Sun lies on the ______________
Fill in the blank(s) with correct word
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
Which position in this diagram represents Earth on the day that we have the longest amount of daylight in the continental United States?
A) 1 B) 2 C) 3 D) 4
A circuit consists of 2N resistors, all of resistance R, connected as shown below. A potential difference V is applied to one end, and the other end is at ground potential. The equivalent resistance of the circuit is
a.
.
b.
R.
c.
