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A rotating wheel requires a time t = 4.32s to rotate 37.0 revolutions. Its angular speed at the end of the interval is !f = 75:9 rad/s. What is the constant angular acceleration (rad/s2 of the wheel?
an electron and a proton are each accelerated through a potential difference pf 10.0 million volts. Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular.
A 500.0 g mass at the end of a spring vibrates 3.0 times per second, What is the maximum velocity of this mass
Two loudspeakers are placed at either end of a gymnasium, both pointing towards each other. The sound emitted by the speakers is in phase and are of frequency of 256 Hz.
A 0.30 kg object is attached to a spring with force constant 167 N/m so that the object is allowed to move on a horizontal frictionless surface. Find the force on the object
The semiconducting compound InAs is widely used for infrared light emitting diodes (LED's). What is the frequency of light emitted by a InAs LED
At its highest temperature, a space heater has a resistance of 19.5 ohm, find the average power output of the space heater
Two masses traveling at the same speed v0 collide head on. Nothing is known about collision other than that it is not completely inelastic.
Water flows in a pipe that has a 4 ft diameter and the following hypothetical velocity distribution: what is the discharge in cubic feet per second
An eagle is flying due east at 8.9 m/s carrying a gopher in its talons. What is the magnitude of the gopher's velocity as it reaches the ground
A penny of mass 3.10 g rests on a small 22.40 g block supported by a spinning disk of radius 11 cm. The coefficients of friction between block and disk are 0.715 (static) and 0.64 (kinetic) while those for the penny and block are 0.564 (static) an..
A 10-kg bullet is fired horizontally into a 300-g wooden block initially at res on a horizontal surface and become embedded in it. The coefficient of friction between block and surface is (0.50).
Suppose a star with radius 8.62 108 m has a peak wavelength of 681 nm in the spectrum of its emitted radiation. What is the surface temperature of the star
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