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A violin string vibrates at 294 Hz when unfingered. At what frequency will it vibrate if it is fingered one-third of the way down from the end? (That is, only two-thirds of the string vibrates as a standing wave.)
Suppose you throw a 0.048-kg ball with a speed of 10.7 m/s and at an angle of 32.1° above the horizontal from a building 11.5 m high. What will be its kinetic energy when it hits the ground
consider four point masses the 1.0 kg mass is 1.0 m from the origin the 2.0 kg mass is 2.0 m from the origin the 3.0 kg
A 0.21-kg ball on a stick is whirled on a vertical circle at a constant speed. When the ball is at the three o'clock position, the stick's tension is 18 N. Find the tension in the stick when the ball is at the twelve o'clock position
There is a +10 nC charge inside a cube of size 5 cm. What additional charge must be placed into the cube
A solid aluminum cylinder with density equal to 2700 kg/m3 has the weight equal to 0.66 N in air and the apparent weight of 0.22 N when immersed in an unknown liquid. What is the density of this liquid
a transformer can be used to step-up or step-down voltage. Since the power must be constant, What is the current in the primary
a long wire has a radius of 1.45 mm. if charges on the surface of the wire produce an electric field just outside its
The mass of the Space Shuttle orbiter is 8.8 x 104 kgand the period of its orbit is 82 minutes. Estimate thekinetic energy of the orbiter and the work done on it by gravitybetween the launch and orbit. (
A box has a partition with 10% of its volume one side. The larger section of the box contains 500 Ar atoms and the smaller 100He atoms. A small hole is put into the partition. At equilibrium, what is the mean number of atoms of each type?
A viscous fluid is flowing through two horizontal pipes. They have the same length, although the radius of one pipe is three times as large as the other. what is the volume flow rate QB in the wider pipe
An elevator has mass 680kg , not including passengers. What is the maximum number of passengers that can ride in the elevator? Assume that an average passenger has mass 65.0 kg
System A consists of a mass attached to a spring with a force constant ; system B has a mass 2 attached to a spring with a force constant ; system C has a mass 3 attached to a spring with a force constant 6; and system D has a mass attached to a s..
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