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An isolated conductor of arbitrary shape has a net charge of +9.0 x 10-6 C. Inside the conductor is a cavity within which is a point charge q = +2.5 x 10-6 C.
(a) What is the charge on the cavity wall?
(b) What is the charge on the outer surface of the conductor?
each day the average family use 100kg of hot water to kill bacteria the water going into the tank at 20degc must be
a 28Kg rock approaches the foot of a hill with a speed of 15 m/s.This hill slopes upward at a constant angle of 40degrees above the horizontal. use energy conservation to find the maximum height the rock will reach
q1. collapsible plastic bags are used in hospitals for infusions. we want to use such a bag to infuse an electrolyte
A stroboscope is a light that flashes on and off at a constantrage. It can be used to illuminate a rotating object, and ifthe flashing rate is adjusted properly, What is the shortest time between flashes of light
a pair of oppositely charged parallel plates are separated by 5.25 mm. a potential difference of 600 v exists between
an irregularly shaped piece of metal has a weight of 0.882 n. it is suspended from a scale which reads 0.735 n when the
The radar system at an airport broadcasts 11 microwaves with 150 of power. An approaching airplane with a 31 cross section is 24 away. suppose that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly..
Write an equation for a wave with a frequency of 2Hz, a wavelength of 30 m, and an amplitude of 75 cm
You were driving a car with velocity ‹ 19, 0, 11 › m/s. You quickly turned and braked, and your velocity became ‹ 13, 0, 15 › m/s. The mass of the car was 1200 kg. What was the (vector) change in momentum
In a car lift, compressed air with a gauge pressure of 4.0 × 10^5 Pa is used to raise a piston with a circular cross-sectional area. what is the maximum mass that can be raised using this piston
A wooden block with equal sides of 4 cm is floating in water. If the density of the block is half the density of water, how far is it from the water to the top of the block?
The distance from earth to the center of our galaxy is about 30,000 light years (1 ly = 1 light year = 9.47 x 10^15 m), how long will it take to make the trip
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