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The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers. In the women's competition, the end of a typical launch ramp is directed 62 degree above the horizontal. With this launch angle, a skier attains a height of 11 meter above the end of the ramp. Determine the skier launch speed?
a 1.0m--tall vertical tube is filled with 20c water. a tuning fork vibrating at 575hz is held just over the top of the
Two hikers begin on opposite sides of a circular lake and walk around the lake in the same direction. How far does the faster hiker walk before catching up to the slower one
A particle slides back and forth on a frictionless track whose height as a function of horizontal position x is given by y=ax2, where a = 0.92m-1. evaluate the turning points of its motion
An alpha particle (a helium nucleus) is traveling along the positive x-axis at 1350 m/s, How far does the particle travel before hitting the tube wall
a two stage rocket of mass 751kg traveling at speed 709ms separates into a first stage of mass 236kg moving at zero
A sled of mass 5.37 kg is coasting along on a frictionless ice-covered lake at a constant speed of 1.13 m/s. At what speed does the sled move once the book is on it
a 15m long string of mass 1.8 kg is stretched such that the tension in the string is 25 n. a wave of frequency 20 hz is
A circular wine barrel 75 cm in diameter will burst if the netupward force exerted on the top of the barrel is 6490 N. What weight of water must be poured into the tube
At what height above the surface of the earth does the balloon have a speed of 7-m/s.
A block of wood has a mass of 3.87 kg and a density of 584 kg/m3. It is to be loaded with lead so that it will float in water with 0.84 of its volume immersed. What mass of lead is needed if the lead is on top of the wood
If you treat an electron as a classical spherical object with radius 2.00×10?17 m, what angular speed is necessary to produce a spin angular momentum of magnitude sqrt3/4h, calculate the speed of a point at the electron's equator
A velocity selector has an electric field of magnitude 2500 N/C,directed vertically upward, and a horizontal magnetic field that is directed south. Charged particles, traveling east at a speed of7.27 x 103 m/s, enter the velocity selector and are ..
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