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Two 10-cm-diameter metal disks separated by a0.67-mm-thick piece of Pyrex glass are charged to a potential difference of 2000 V .
What is the surface charge density on the glass?
Express your answer using two significant figures in μC/m2
A roller coaster seat exerts a normal force of 120N on a 40kg passenger at the apex of a vertical loop. what is the speed of the coaster
A Carnot engine operates between hot and cold reservoirs with temperatures 527 Degrees Celsius and -73 Degrees Celsius. how much heat is extracted per cycle from the hot reservoir
a small sphere with a radius r 1.52cm and a mass m 13.8g rolls without slipping on the inside of a large fixed
If Galileo dropped a 2.37 kg cannon ball from the 58.5m Tower of Pisa, how much work did gravity do on the ball
A storage tank at STP contains 18.5kg of butane gas, C4H10, Determine the number of moles of butane gas
Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3. What must be the minimum diameter of the spherical balloon
a 2m long uniform bar that weighs 10n is used to hold a 3n sign. a cable is attached to one end of the bar and the
suppose that the speed of light in a vacuum were one million times smaller than its actual value c 3.00 x 102 ms. the
A solenoid 22.0 cm longand with a cross-sectional area of 0.500cm2 contains 415turns of wire and carries a current of 85.0 A. Calculate the magnetic field in the solenoid. Calculate the energy density in the magnetic field if thesolenoid is filled wi..
The current in a series circuit is 22.0 A. When an additional 12.0-? resistor is inserted in series, the current drops to 11.0 A. What is the resistance in the original circuit
a helicopter starting from rest accelerates straight up from the roof of a hospital. the lifting force does work in
A radioactive sample produces 3840 decays per minute at one point in an experiment and 308.09 days later produces 240 decays per minute. What is the mean lifetime of the material
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