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the 1994 winter olympics include theaerials competition in skiing. in this event skiers speed down aramp that slopes sharply upward at the end. the sharp upward slopelaunches them into the air, where they perform acrobatic maneuvers.in the womens competitions, the end of a typical launch ramp isdirected 63 degrees above the horizontal. with this launch angle, askier attains a height of 13m above the end of the ramp. what isthe skiers launch speed?
Runner A is at first 6.60 km west of a flagpole and is running with a constant velocity of 6.4 km/h due east. Runner B is firstly 7.20 km east of the flagpole and is running with a constant velocity of 8.80 km/h due west.
A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.542, How much force is needed to keep the book moving at constant speed once it begins moving
An electron has a kinetic energy of 0.100 MeV. Find its speed according to classical and relativistic mechanics
a 12.0 g plastic ball is dropped from a height of 2.50 m, How much mechanical energy was lost during the balls fall
Your car tire is rotating at 3.3 rev/s when suddenly you press down hard on the accelerator. What was the tire's angular acceleration
A 5 kg block is dragged on a horizontal surface in a circular path of radius 2 m. what is the work done by friction during one turn
Consider a conical pendulum with a 86.0 kg bob on a 10.0 m wire making an angle of ? = 7.00° with the vertical. What is the radial acceleration of the bob
The electric potential difference between two infinite, parallel metal plates is V. If the plates are separated by a distance L = 4.50 mm and the electric field between plates is E = 270 V/m, what is V.
A battery having an emf of 11.10 V delivers 111 mA when connected to a 73.0 load. Determine the internal resistance of the battery
An Oscilloscope grid is calibrated so that one square represents 1-V vertically and 1 msec horizontally. If the height of a square wave pulse display is 6 squares, the width of the pulse is 7 squares, and the cycle of the wave is 16 squares, the a..
A 4.5 volt battery is connected to a buld with a resistance of 1.6 ohm. How many electrons leave the battery per second
a 5 kg mass is attached to the end of a 1.0-m string. The system is whirled in a horizontal circular path. What is the maximum speed of the mass if the string is not to break
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