What is its final kinetic energy
A proton is initially at rest at a point where the potential is 499 V. Some time later the proton is at a point where the potential is 211 V. If no force other than the electrostatic force acts on the proton, what is its final kinetic energy?.
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A 45-m length of wire is stretched horizontally between two vertical posts. The wire carries a current of 69 A and experiences a magnetic force of 0.15 N. Find the magnitude of the earth's magnetic field at the location of the wire, assuming the
A 0.25 harmonic oscillator has a total oscillation energy of 9.9 J. If the oscillation amplitude is 20.0 cm, what is the oscillation frequency?
A 18.8 kg block is dragged over a rough, hor- izontal surface by a constant force of 77.6 N acting at an angle of 35? above the horizon- tal. The block is displaced 10.8 m, and the coefficient of kinetic friction is 0.139. The acceleration of grav
After a tornado, a 0.60 straw was found embedded 2.7 into the trunk of a tree.If the average force exerted on the straw by the tree was 85 , what was the speed of the straw when it hit the tree?
While the woman walks, she maintains a constant speed of 3.0 m/s relative to the raft. Find the total kinetic energy of the system (woman plus raft) Find the total kinetic energy of the system if the woman walked at 3.0 m/s on a raft tied to the p
To store the energy produced in 1.0 hour by a 140 electric-power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir?
Suppose you wish to fabricate a uniform wire out of 2.6 g of copper. If the wire is to have a resistance of R = 0.25 and if all of the copper is to be used, what must be the length of the wire in m and the diameter of the wire in mm?
A student has a mass of 90.0 kg, and the height of the water slide is 13.6 m. The kinetic frictional force does -6.30 103 J of work on the student. What is the student's final velocity?
The tendency of an object rotating about an axis to resist any of its roational motion is refered to as ------
Catching a wave, a 61-kg surfer starts with a speed of 1.3 m/s, drops through a height of 1.45 m, and ends with a speed of 8.2 m/s. How much nonconservative work was done on the surfer?
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