Two small charged objects repel each other with a force F when separated by a distance d. If the charge on each object is reduced to one-fourth of its original value and the distance between them is reduced to d/2 the force becomes:
A) F/16
B) F/8
C) F/4
D) F/2
E) F
C) F/4
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Impulse: A 475-gram ball is traveling horizontally at 12.0 m/s to the left when it is suddenly struck horizontally by a bat, causing it to reverse direction and initially travel at 8.50 m/s to the right. If the bat produced an average force of 1275 N on the ball, for how long (in milliseconds) was it in contact with the ball?
Fill in the blank(s) with the appropriate word(s).
How can a single narrow slit produce an interference pattern?
A. The edges cause diffraction B. Each point on the wave front acts as a wavelet source C. It can't D. This is still unexplained.
If a magnet produces a force on a current-carrying wire, the wire
A) produces a force on the magnet. B) may or may not produce a force on the magnet. C) none of these
The drag force is independent of the velocity of the object
Indicate whether the statement is true or false