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Q1. A certain groove in phonograph record moves past the needle at 36 cm/s. If the wiggles in the grove are 0.1 mm apart, what is the frequency of sound that is produced?
Q2. Coin is placed 14.0 from the axis of the rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on turntable until a rate of 40.0 (revolutions per minute) is reached, at that point the coin slides off.
A parallel plate capacitor has a capacitance of 4.5 µF when filled with a dielectric. What is the dielectric constant of the dielectric
Two automobiles of equal mass approach an intersection. One vehicle is travelling with velocity 13 m/s toward the east and the other is travelling north with speed v2i. Neither driver sees the other.
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 40.0m/s , Find the vertical component of the average force on the ball
The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, Determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 19.4g
The car has just achieved double its initial velocity when the driver spots a police officer behind him and applies the brakes. The car then slows down, coming to rest at the stoplight ahead.
Assume a car's brakes can produce an acceleration of -7 m/s2. If the car is travelling at an initial speed of 28.0m/s, what is the minimum distance necessary to stop car.
A conducting sphere that carries a total charge of -9.1 µC is placed at the center of a conducting spherical shell that carries a total charge of +1.7 µC. The conductors are in electrostatic equilibrium. Determine the charge on the outer surface o..
One gallon of gasoline contains 3.1x10^7 calories of potential energy that are released during combustion. what is the average force produced by the gasoline
If the fish starts from a distance 1.09 m from the base of the ledge over which the waterfall flows, Can the fish make this jump
To get the top spinning, its string is pulled with a tension of 0.30. Explain how long does it take for the top to complete the first five revolutions? The string is long enough that it is wrapped around the top more than five turns.
A net force of 25 newtons is applied horizontally to a 10. kilogram block resting on a table. What is the magnitude of the acceleration of the block
estimate the average power output on the way up. A speedboat moving at 39 m/s approaches a no-wake buoy marker 100 m ahead. The pilot slows the boat with a constant acceleration of -3.15m/s2 by reducing the throttle.
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