Een the
are
12. A piano string having a diameter
of 0.90 mm is replaced by another
string of the same material but with
diameter 0.93 mm. If the tension of
the wire is the same as before,
(a) what is the percentage change
in the frequency of the
fundamental note?
(b) what percentage change in the
tension would be necessary to
restore the original frequency?
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its

s in
249

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p