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A person with very good musical pitch listens to a guitarist on a moving stage play a high A (880 Hz) while the stage is moving away at 4.0 m/s on a cold day, 0 °C. What frequency does this person hear? If they can discriminate 0.25 Hz can they tell the difference between this note from a moving guitarist and a stationary guitarist?
A free electron is placed between two large, parallel,nonconducting plates that are horizontal and 1.6 cm apart. One plate has a uniform positivecharge; the other has an equal amount of uniform negative charge.The force on the electron due to the ..
A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane . Determine the speed of the block after it has traveled 1.80 along the plane, ..
my kids came up with a form of tether ball where they attached a ball to a string and let it swing around the role.
A solid spherical ball of mass 1.85 kg and radius 0.13 m rolls along a smooth, level surface with a speed of 2 m/s. The ball rolls up an inclined plane. How far up, vertical height, the plane does the ball go
How long must a 0.60-mm-diameter copper wire be to carrya 0.50 {\rm A} current when connectedto the terminals of a 1.5 {\rm V} flashligh tbattery? What is the current if the wire is half the length inpart A?
Starting from rest, a dragster travels a straight 1/4 mi racetrack in 6.70 s by constant acceleration. What is its velocity when it crosses the finish line?
a police car is traveling east at 39.5 ms along a straight road overtaking a car ahead of it moving east at 31.5 ms.
A charged particle moves in a uniform magnetic field of 0.727 T with a period of 8.57 × 10-6 s. Find its charge-to-mass ratio
An object is made of glass and has the shape of a cube 0.11 m on a side, according to an observer at rest relative to it. What is the moving observer's speed (in units of c) relative to the cube
A 2.85 kg bucket is attached to a disk-shaped pulley of radius 0.121 m and mass 0.742 kg. If the bucket is allowed to fall, (a) what is its linear acceleration? (b) What is the angular acceleration of the pulley? (c) How far does the bucket drop in 1..
A vector has an x component of -27.5 units and a y component of 35.8 units. Find the magnitude and direction of this vector
the uniform electric field between the two plates of a capacitor is 120 n and the potential difference between plates
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