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Consider 2 similar situations. First, a snow sled is initially traveling with a velocity along horizontal snow and comes to a stop through friction. A second snow sled is traveling the same initial velocity on identical snow conditions and comes to a stop as well. However, the second is traveling down hill. The second takes a longer distance to slow down to a stop. Explain why
A small sphere with mass 9.00 μg and charge -4.30μC is moving in a circular orbit around a stationary sphere that has charge +7.50μC.If the speed of the small sphere is v = 5900 m/s , what is the radius of its orbit? Treat the spheres as point charge..
To basketball player bounces the 0.60-kg basketball to anotherplayer by bouncing it off the court. what was the impulse delivered to it by the court
m1 = 26.00 kg, m2 = 13.10 kg, R = 0.12 m, and the mass of the uniform pulley M = 5.00 kg. Calculate the time interval required for m1 to hit the floor
A 37.6 kg crate rests on a horizontal floor, and a 76.1 kg person is standing on the crate. Determine the magnitude of the normal force
If a engine does 200 J of net work and exhausts 800 J of heat per cycle, what is its the thermal efficiency
A parallel-plate air capacitor of area A=14.0cm^2 and plate separation d=3.00mm is charged with a battery to a voltage 68.0V. If a dielectric material with kappa=3.90 is inserted so that it fills the volume among the plates (with the capacitor still ..
A string length 2.0 m and linear mass density 25.0 mg/m vibrates at a fundamental frequency of 450.0 Hz. What is the speed of the transverse strin waves
Calculate the force on a dielectric slab inserted partly into a parallel plate capacitor with plate dimensions L and w, with a length x of the dielectric lying between the plates. Assume that the plates are isolated, so the charge ±Q on the plates..
If you dive the depth of 10 m below the surface of a lake, What is the pressure due to the water alone
A particle is acted on by two torques about the origin: ?1 has a magnitude of 4.5 N·m and is directed in the positive direction of the x axis, and ?2 has a magnitude of 3.2 N·m and is directed in the negative direction of the y axis. What are the mag..
A wooden raft has a mass of 45 kg. When empty it floats in water (density 1000 kg/m3) with 68% of its volume submerged. What mass of sand could be put on the raft without it sinking.
A skier starts from rest at the top of a hill. The skier coastsdown the hill and up a second hill, as the drawing illustrates. Thecrest of the second hill is circular, with a radius of 31.5 m.Neglect friction and air resistance.
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