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An Olympic long jumper jumps 8.04m, reaching a height of 0.80 m halfway through his jump. What was his velocity as he left the ground? Also, how far would he be able to jump on the moon (g=1.63 N/kg) and how much time would he spend off the lunar surface?
Protons and electrons can be given very high energies in particle accelerators. What is the wavelength of an electron that has been accelerated to 99% of the speed of light
An iron disk has a radius of 0.445 m and a mass of 367 kg. The disk is mounted on its axis so that it is free to spin. If the torque is applied at the edge of the disk, how much force is required
In a specific heat experiment 184.0 grams of aluminum (C=913.0 J/kg.K) at 100.0°C) is mixed with 48.0 g water at 20.0°C. Find the entropy change of the aluminum
If 0.260kg of blood at a temperature of 37.0 ? C flows to the surface and loses 1400J of heat, what is the temperature of the blood
A 2400-kg satellite is in a circular orbitaround a planet. The satellite travels with a constant speedof 6.67x10 3 m/s. What is the acceleration of the satellite
The lows note emitted by stretched string has a frequency of 50Hz.how many outcome are possible between 40Hz and 170Hz.
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 3781 kg), which is made of steel (? = 7850 kg/m3). In typical comic-book fashion, they decide to raise the yacht (which is now on the bottom of a lake) by filling it with ping-p..
A person swimming 0.80 m below the surface of the water in a swimming pool looks at the diving board that is directly overhead, What is the actual height of the diving board
A 110kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 350N. For the first 15.00 m the floor is frictionless and for next 15 m the coefficient of friction is 0.30. What is the final speed of the crate.
What is the gauge pressure of ocean water at a depth of 73.6 m? The density of ocean water is 1035 kg/m3
A charge of -8.0 nC is uniformly distributed around a ring of radius 1.3 m that lies in the yz plane with its center at the origin. Calculate the work done in moving the point charge to the origin
A square with sides of length L=.1 m has a point charge of 2 microC at each of its four corners. Find the magnitude of the force acting on any one of the charge
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