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We have a hollow metallic sphere with charge -5.0 µC and radius 5.0 cm. We insert a +10-µC charge at the center of the sphere during a hole in the surface. What charge now rests on the outer surface of the sphere?
what is the distance of closest approach of the two particles? assume that the gold nucleus remains stationary and that
A dc motor is connected to a constant emf of 15.6 V. The resistance of its windings is 2.0 ohms. What is the back emf induced in the windings at normal speed
a golfer tees off on level ground giving the ball an initial speed of 46.5 ms and an initial direction of 37.5 degrees
If the area of the crack is 1.3 cm^3, at what rate of flow does the water leave the container
A projectile of mass 0.605 kg is shot straight up with aninitial speed of 18.3 m/s. (a) How high would itgo if there were no air resistance? (b) If theprojectile rises to a maximum height of only 7.02 m, determine the magnitude of the average force d..
A bag of potato chips contains 2.00 L of air when it is sealed at sea level at a pressure of 1.00 at m and a temperature of 20.0°C. What will be the volume of the air in the bag if you take it with you, still sealed, to a higher altitude where the te..
a a particle with energy of 1 ev approaches an energy barrier with height 1.5 ev. if the barrier height is slowly
A 4.0 kg mass is hung vertically from a spring with a spring constant of 510 N/m. It is pulled down from its equilibrium position by 2.0 cmand allowed to oscillate. What are the period and frequency of oscillation
the fresh water behind a reservoir dam has depth D = 14.4 m. A horizontal pipe 4.18 cm in diameter passes through the dam at depth d = 6.40 m. Find the magnitude of the frictional force between plug and pipe wall
A 32.8 g piece of aluminium at 72 is dropped into a cavity in an extremely large block of ice at 0. How much ice mice does aluminium piece melt.
A 0.50 kg block rests on the icy surface of a frozen pond, which you can assume to be frictionless. what is the minimum uncertainty in the block's speed
A transformer for an answering machine takes an acvoltage of amplitude 150 V as its inputand supplies a 7.9 V amplitude to the answering machine. The primary has 400turns.
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