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A 286 kilogram log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0o with respect to the horizontal. The coefficient of kinetic friction between the ramp and the log is 0.810, and the log has an acceleration of 0.700 m/s. Estimate what the tension in the rope.
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The speed of a 135-gram hockey puck decreases from 37.0 m/s to 30m/s while coasting a distance of 12.5 meters. Find the force of friction between the ice and the puck
The position of a particle moving along the x axis depends on the time according to x=ct^2-bt^3, what distance does the particle move and what is its displacement
Use the worked example above to help you solve this problem. A balloon contains 4.40 moles of a monatomic ideal gas. Find the work Wenv done by the gas in expanding the balloon
A woman in a movie fires a gun and is pushed backwards. The mass of the bullet is 0.050 kg and the bullet velocity is +850 m/s. What is the recoil velocity of the woman
A 4.5 kg mass is fastened to a light spring, with the intervening cord passing over a pulley, find the change in gravitational potential energy of the of the mass
A point charge of +7.6? C is located 0.27 m from a second point charge of -4.9? C. What is the absolute magnitude of the force on each charge
a football punter accelerates a football from rest to a speed of 8 ms during the time in which his toe is in contact
A ball thrown horizontally at 24.72 m/s travels a horizontal distanceof 49.51 m before hitting the ground. From what height was the ball thrown
two long wires are seperated by a distance of 33 cm and carry current in the same direction. wire a carries a current
A proton (mp=1.67x10-27 kg, qp=+e=1.6x10-19 C) and an alpha particle (m=6.64x10-27 kg, q=+2e=2x1.6x10-19 C) are initially at rest and separated by a distance of ri=4.0x10-15 m and they are both released simultaneously.
vehicle 1 skidded 150 feet and crashed into vehicle 2. vehicle 2 was parked whennbspvehicle 1 struck it and test skids
A rectangular trough, 1.6 m long, 0.60 m wide, and 0.50 m deep, is completely full of water. at what speed does water emerge from the hole
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