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A solid cylinder of mass 10 kg and radius 50 cm rotates with angular speed of 375 revs per minute. An object is then brought in contact with the cylinder while rotation causing a tangential force of friction of 2.0N
a) what is the angular acceleration of cylinder.
b) How long does it take for the cylinder to stop.
The frequency of light reaching Earth from a particular galaxy is 8% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth
X-ray photons wit a wavelength of .22nm are scattered off free electrons at an angle of 45 degrees. What are the wavelength and the energy of the scattered photons
A ball of mass 0.1 kg is suspended vertically from the ceiling with a "massless" string and brought to rest. what will be the magnitude of the resulting angular acceleration
You are on an airplane traveling 30° south of due west at 150.0 m/s with respect to the air. The air is moving with a speed 38.0 m/s with respect to the ground due north. What is the heading of the plane with respect to the ground
A ranger in a national park is driving at 52 km/h when a deer jumps onto the road 86 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.9 m/s2.
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 55.0 m/s, What work does the racquet do on the ball
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 -T magnetic field. The loop carries a current of 6.2 A. What is the magnetic moment of the loop
A potential difference of 100 mV exists between the inner and outer surfaces of a cell membrane. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell
Find the minimum initial speed of a projectile in order for it to reach a height of 2135 km above the surface of the eartH
Find the change in internal energy using first law of thermodynamics.
Assume that you have two objects, one with a mass of 5 kg and the other with a mass of 17 kg, each with a charge of ?0.011 C and separated by a distance of 8 m. What is the electric force that these objects exert on one another? Answer in units of..
A person drops a cylindrical steel bar (Y = 2.00 × 1011 Pa) from a height of 3.30 m (distance between the floor and the bottom of the vertically oriented bar). what is the maximum compression of the bar
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