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A square plate of copper with 54.0 cm sides has no net charge and is placed in a region of uniform electric field of 82.0 kN/C directed perpendicularly to the plate.
(a) Find the charge density of each face of the plate.
(b) Find the total charge on each face.
You have a 250-? resistor and a 0.400-H inductor. Suppose you take the resistor and inductor and make a series circuit with a voltage source that has a voltage amplitude of 28.0V, What is the voltage amplitude across the resistor
A golfer hits a golf ball, giving the ball an initial speed of 41.5 m/s, at an angle of 35.0 degrees to the horizontal. At what horizontal distance from the golfer, does the ball land?
How much work is done by pressure in forcing 6.6 m3 of water through a 13.0 mm internal diameter pipe if the difference in pressure at the two ends of the pipe is 1.0 atm
For exercise, a 60 kg athlete runs up a 10-m high hill in 30 seconds. Assume the efficiency of the human body is 25%. Determine her metabolic power
A hollow metal sphere has inner radius a, outer radius b, and conductivity sigma. Evaluate the electric field strength at the inner surface of a copper sphere if 0.70cm and 28A
Calculate the force of gravity on a spacecraft 25600 km (4 earth radii) above the Earth's surface if its mass is 1500 kg
A performer at the Cirque de Dartmouth is shot by a cannon elevated at 30 degrees from the horizontal. What was the highest point in his trajectory
A uniform magnetic field points north; its magnitude is 4.5 T. A proton with kinetic energy 7.1 10-13 J is moving vertically downward in this field. What is the magnetic force acting on it
Describe, in general terms, how we may be able, through some simple experiments, determine the mass of the Earth
Three equal 1.49 µC pointcharges are placed at the corners of an equilateral triangle whosesides are 0.500 m. What is the potential energy of the system? (Take zero as the potential energy of the three charges when they are infinitely far apart.)
Two astronauts, each having a mass M, are connected by a rope of length d having negligible mass. They are isolated in space, orbiting their center of mass at speeds v. What is the new rotational energy of the system
A catapult on a cliff launches a large round rock towards a ship on the ocean below. Calculate the speed at which the rock is launched
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