In a circuit made up of inductor, resistor, 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. reciprocal of one time constant
c. ten time constants
b. zero
d. one time constant
B
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The graph below plots the escape velocity of each planet along the vertical axis and its surface temperature along the horizontal. The lines plotted in the figure are the average speeds of gas particles as a function of temperature for various gases. Which of the planets or satellite plotted in this diagram is least able to hold an atmosphere?
The presence of breccias among the lunar rock samples shows that
a. volcanism did not occur on the moon. b. molten lava once flowed over the lunar surface. c. the crust must have been made of anorthosite. d. water once existed on the moon in the form of small lakes and streams. e. the lunar surface was fragmented by meteorite impacts.
Which of the following are vectors?
(i) your age (ii) your height (iii) acceleration (iv) velocity (v) speed (vi) mass
1.(iii) and (iv) 2.(iii), (iv), and (v) 3.(i), (ii), and (vi) 4.all of theseDetermine the Prandlt number for liquid potassium at 600 K.
What will be an ideal response?