The explosion in a cannon exerts an average force of 30,000 N for L meters, the length of the cannon. The length of the cannon to shoot a 2.00 kg projectile from the cannon on the earth to the moon is
A. 2.75 km.
B. 3.01 km.
C. 3.98 km.
D. 4.26 km.
E. 5.02 km.
D. 4.26 km.
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Potential: How much kinetic energy does a proton gain if it is accelerated, with no friction, through a potential difference of 1.00 V? The proton is 1836 times heavier than an electron, and e = 1.60 × 10-19 C.
A. 1836 eV B. 1.00 eV C. 1.60 × 10-19 eV D. 1.00 J E. 1836 J
RMS and Peak Quantities: An alternating current is supplied to an electronic component with a rating that the voltage across it can never, even for an instant, exceed 16 V. What is the highest rms voltage that can be supplied to this component while staying below the voltage limit?
A. 8
V
B. 16
V
C. 256 V
D. 8 V
Two balls have the same size and surface texture, but one is twice as heavy as the other. How many times larger is the terminal speed of the more massive ball falling through air than that of the lighter ball?
A. The balls fall with the same speed in air. B. The massive ball’s terminal speed is [2]1/2 times larger than the other’s. C. The massive ball’s terminal speed is 2 times larger than the other’s. D. The massive ball’s terminal speed is 4 times larger than the other’s. E. The massive ball’s terminal speed is some other multiple of the other’s (specify).