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When a high jumper is in a position such that his arms and legs are hanging vertically, and his trunk and head are horizontal, find how far below the torso median line the CM will be.
The stairs are 83 long and inclined at the angle of 31. If a player has a mass of 87, estimate his average power output on the way up. Overlook friction and air resistance.
A hydrogen atom is in the ground state. It absorbs energy and makes a transition to the n = 6 excited state. What are the photon wavelengths of transitions
A transverse wave travels on a string of length 1.3 m and diameter 1.1 mm, What is the linear mass density of the string
A 41.2-kg boy, riding a 2.65-kg skate board at a velocity of +5.27 m/s across a level sidewalk,jumps forward to leap over a wall. Just after leaving contact withthe board, the boy's velocity relative to the sidewalk is 5.52m/s, 8.64° abovethe hori..
Two parallel current carrying wires are separated by 12 cm and each are 50 cm in length. find the Force acting each wire due to the other one
A rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. The wire has radius r = 4.3 10-4 m and is made of copper having a density of ? = 8960 kg/m3. Calculate the final speed of the wire as it leaves th..
A projectile is fired in such a way that its horizontal range is equal to 12 times its maximum height. What is the angle of projection
A boat moves through the water with two forces acting on it. One is a 2000 N forward push by the water on the propeller, What will its velocity be at the end of that time
A rock is thrown vertically upward with a speed of 15.0m/s from the roof of a building that is 40.0m above the ground, What is the speed of the rock just before it strikes the ground
A flashlight contains two batteries in series each having a potential difference of 1.5V and an internal resistance of 0.2 ohms, How much power does the bulb dissipate
For the winter, a duck flies 15.0m/s due south against agust of wind with a velocity of 2.5m/s. What is the resultant velocity of the duck
A solid homogeneous sphere of mass M = 3.20 kg is released from rest at the top of an incline of height H=1.57 m, Determine the rotational kinetic energy of the sphere at the bottom of the incline
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