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A nonconducting sphere of charge +Q and mass m is attached to a string of length L and hangs from a ceiling. When a uniform electric field directed horizontally (from left to right) is introduced, equilibrium is eventually established with the mass hanging at an angle ? with respect to the vertical. In terms of g and the given quantities, find the strength of the electric field and the tension in the string.
Steam at 200 (psia) and 600 ( ? F) [state 1] enters a turbine through a 3-inch-diamter pipe with a velocity of 10 (ft)(s)? 1 . The exhaust from the turbine is carried through a 10-inch-diameter pipe and is at 5 (psia) and 200 ( ? F) [state 2]. What i..
A gold conductor with an electric field of 0.01 V/m applied, is1.00 cm long, and 0.05 mm in radius. Assuming one conduction electron per atom, what is the drift velocity of the electrons at a temperature of 20 degrees C. At 50C?
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. (a) Assume that the Earth is a conducting sphere with charge on its surface.
The star Betelguese has a radius and surface temperature of about 10^8 miles and 3000K. The sun has a radius and surface temp of about 5x10^5 miles and 6000k. Find the ratio of the power radiated by the sun and Betlguese Psun/Pbet.
Estimate the average force exerted by a shot-putter on a 7.0 kg shot if the shot is moved through a distance of 2.8 m and is released with a speed of 13 m/s
A 260 km long-high voltage transmission line 2.0 cm in diamter carries a steady current of 910A. If the conductor is copper with a free charge density of 8.8x10^28 electroncs per cubic meter, how many does it take one electron to travel the full ..
The brake is released on a car of mass 500 kg at the top of ahill with height 150m. find the velocity of the car atthe bottom of the hill
A proton moves at 4.9x106 m/s in a magnetic field where B = 0.42 T. what force does the proton experience
As you finish listening to your favorite compact disc (CD),the CD in the player slows down to a stop. Assume that the CD spinsdown with a constant angular acceleration. *If the CD rotates at 500 rpm (rev
A 3.9 kg block of copper at a temperature of 70oC is dropped into a bucket containing a mixture of ice and water whose total mass is 1.2 kg, How much ice was in the bucket before the copper block was placed in it
A rock climber throws a small first aid kit to another climberwho is higher up the mountain. what is thevertical height between the two climbers
At a stop light, a truck of mass, mT = 1.10 x 10^4 kg, fails to hit its brakes until it has hit a car of mass,mC = 1.60 x 10^3 kg. Determine the velocity of the combined truck and car immediately after the collision
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