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A 2.0kg wood block is launched up a wooden ramp that is inclined at a 35? angle. The block's initial speed is 9.0m/s . The coefficient of kinetic friction of wood on wood is ?k=0.200.
1- What vertical height does the block reach above its starting point?
2- What speed does it have when it slides back down to its starting point?
A 3.2 mass attached to a spring with a spring constant of 114 is oscillating in a vat of oil, which damps the oscillations. If the damping constant of the oil is 10kg/s, how long would it take the amplitude of the oscillations to decrease to 1.0% ..
a freezer with a coefficient of performance of 3.88 is used to convert 1.75 kg of water to ice in one hour. how much electrical energy does the freezer use during this hour of operation
A 60.0 gram golf ball is dropped from a height of 2.00 meters. how much energy did the ball lose
A 12.0-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.2 m/s, determine the rotational kinetic energy about its center of gravity
A broken piano emits frequencies from a low of 32.0 Hz to a high of about 4100 Hz. What is the shortest wavelength if the speed of sound in air is 342.50 m/s? Record the answer to three decimal places and include units in the answer.
A simple pendulum consists of a ball connected to one end of a thin brass wire. Determine the change in the period of the heated pendulum
Two identical 30 {rm g} particles each carry 3 {rm mu C} of charge. One is held fixed, and the other is located 1 {rm mm} away and released. Find the speed of the moving charge when it's 1{rm cm} from the fixed charge.
A wheel with radius 43.9 cm rotates 4.27 times every second. What is the tangential speed of a wad of chewing gum stuck to the rim of the wheel
A typical wall outlet is 120 volts in the U. S. Personal MP3 players require much smaller voltages, calculate the number of turns on the secondary coil of the adapter transformer
Assume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W. What is the radius of the star
A current-carrying wire passes through a region of space that has a uniform magnetic field of 0.76 T. determine the minimum current needed to levitate the wire
A 6-kg bucket of water is being pulled straight up by a string at a constant speed. What is the tension in the rope
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