The buoyant force on a one-ton blimp hovering in air is
A) zero.
B) one ton.
C) less than one ton.
D) more than one ton.
Answer: B
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The frequency of a wave is
A) measured in hertz (Hz). B) measured in cycles per second. C) equal to the speed of the wave divided by the wavelength of the wave. D) the number of peaks passing by any point each second. E) all of the above
A parallel plate capacitor with circular plates having radius 0.07 m is used to store energy. If it is desired to store 
in this capacitor, what must the separation distance be for a voltage of 1.5 kV?
A. 0.64 cm B. 0.41 cm C. 2.5 cm D. 1.3 cm
Kirchhoff's Rules: A multiloop circuit is shown in the figure. Find the current I2 if the batteries are ideal. (It is not necessary to solve the entire circuit.)
A. -3 A B. 3 A C. 7 A D. -7 A E. 0 A
Saturn's cloud layers are thicker than Jupiter's, due to Saturn's ________ gravity
Fill in the blank(s) with correct word