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Sir Dudley the Dextrous is loading cannons on top of the castle\'s tallest towers in preparation for an expected attack. He slips, and a 2.00 kg cannonball rolls to the edge of the tower (which has a perfectly horizontal surface), and falls to the ground below. It takes the cannonball 1.15 seconds to fall to the ground, and air resistence is negligible. How much work is done by gravity on the falling cannonball? ______J During the fall, what is the average power exerted by gravity on the cannonball?
An electron in an atom has an orbital angular momentum with ml = 0. What is the component morb,z? (J*s) What is the component ?orb,z? (J/T) If an atom is in an external magnetic field B of magnitude 45 mT and directed along the z-axis, what is the..
find the non-zero Christoffel symbols and the equations, of the geodesic, for the two dimensional case of move-ment on the surface of a cylinder of radius and show that the transformation is an invariance transformation by finding the function A
A car traveling at a constant speed of 27.0 m/s passes a trooper hidden behind a billboard. From the intersection of the two curves, read the time at which the trooper overtakes the car
A material of resistivity %u03C1 is formed into the shape of a truncated pyramid of altitude 3a, Find the resistance of the wire
The length of a string is 322 cm. It is held fixed at each end. The string vibrates in seven sections; such as the string has seven antinodes, and the string vibrates at 160 Hz.
A simple pendulum is made from a string that is 0.60m inlength with a mass of 0.2kg attached to the free end. The mass ispulled to one side through a small angle and released fromrest.
A very light rigid rod with a length of 0.500 m extends straight out from one end of a meter stick. Determine the period of oscillation
There are four charges, each with a magnitude of 1.8 μC.Two are positive and two are negative. The charges are fixedat corners of a 0.25 m square, one to a corner, in such a way thatthe net force on any charge is directed toward the center of thes..
A diver of mass 70kg jumps off a board 10m above the water. what average upward force did the water exert on him
A diverging lens has a focal length of 53 cm.If an object is 40 cm from the lens, What is the magnitude of the magnification for this lens
One particle has a mass of 2.00 10-3 kg and a charge of +9 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. The two particles are initially held in place and then released. The particles fly apart, and when the separation between..
An electric motor with a 2.7-hp output drives a machine with an efficiency of 35%. What is the energy output of the machine per second
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