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A skier starts from rest at the top of a frictionless incline of height 20.0 m, as shown in the figure. At the bottom of the incline, the skier encounters a horizontal surface where the coefficient of kinetic friction between skis and snow is 0.201. Neglect air resistance.
(a) Find the skier's speed at the bottom.
(b) How far does the skier travel on the horizontal surface before coming to rest? m
A boat has a mass of 5220 kg. Its engines generate a drive force of 4480 N due west, What is the boat's acceleration
If three 0.8 m fan blades are connected to a motor and accelerated uniformly from rest to 54 rpm in 7 minutes. Determine the angular acceleration of the blades.
Two 1000 kg cars drive east; the first moving at 25 m/s, the second at 15 m/s. What is the magnitude of the total momentum of the system
A sledge loaded with bricks has a total mass of 17.1 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. how much work is the roping doing on the sledge
A man sits on the south bank of a 100m wide river that flows due east at 2m/s. The man can swim 3m/s, How long will it take him to cross
A 206 n sign hangs from the end of a 3.30 m long bar. find the two forces exerted by bolts A and B
A 155 g copper bowl contains 245 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5 g being converted to steam. The final temperature of the system is 100°C. Neglect energy trans..
a 5.0 kg object is supported by an aluminum wire of length 2.6m and diameter 2.2mm. How much will the wire stretch
A sample of gas (? = 1.5) is taken through an adiabatic process in which the volume is compressed form 1600 cc to 400 cc. If the initial pressure is 150 KPa, what is the final pressure? How much work is completed on the gas in process.
When the front of the train passes the worker. A 1500 kg car moving north at 27.0 m/s is struck by a 2165-kg car moving east at 18.0 m/s. The cars are stuck together. How fast and in what direction do they move immediately after the collision.
A typical person radiates about 62 W of power at room temperature. Given this result, how long does it take for a person to radiate away the energy obtained by consuming a 230-calorie doughnut.
A softball of mass 0.220kg that is moving with a speed of 8.5m/s collides head-on and elastically with another ball initially at rest. find the velocity of the target ball after the collision
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