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A 56.0 kg mass is sliding down a frictionless plane at a speed of 4.20 m/s. A force of 55.0N parallel to the plane acts on the mass to pull it up the plane. When the force has acted over a distance of 6.80 m, the mass has a speed of 5.40 m/s. What change in gravitational potential energy occurred while the force acted on the mass?
A positive charge q is placed at the origin. Identical charges Q are located at ±a on the x-axis. If the charge q is dispaced at a small distance x (much smaller than a) in either direction along the x-axis, find the period of SHM.
A 2000w air conditioner and 700w refrigerator each operate on 120V rms. find current through air conditioner
a heavy piece of machinery is raised by sliding it a distance d = 14.9 m along a plank oriented at angle ? = 25.7° to the horizontal. How high above its original position is it raised
a 0.40 kg mass attached to the end of a string swings in a vertical circle of radius 1.8 m. at an instant when the
Determine the magnitude of the resultant force and its direction, measure counterclockwise from the positive x axis.
suppose that resting on your non-conducting desktop is a tiny piece of paper m 0.08 g that happens to carry a charge of
Two soccer players start from rest, 43 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
A 0.534-nm photon collides with a stationary electron. After the collision the electron moves forward and the photon recoils backwards. Find the momentum of the electron.
Water has a specific heat capacity of 4186 J/kg C. A tank contains 500 kg of water at 10 C. what is the cost of heating the water
acetone and chloroform form a nonideal mixture. at 35 degrees celsius the vapor pressure of acetone is 347 torr and
Two moles of a monatomic gas with an rms speed of 294 m/s are contained in a tank that has a volume of 0.12 m3. If each gas particle has a mass of 8.220 × 10^-26 kg, what is the temperature and absolute pressure of the gas?
The container is slightly heated, and the alcohol column is observed to move along the linear section of the tube. If the temperature of the air in the container was originally 23 Celsius, then if the temperature increases by .36 Celsius how far w..
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