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A Van de Graaff generator has a spherical dome of radius 25 cm. Operating in dry air, where "atmospheric breakdown" is at Emax = 3.0 · 106 N/C, what is the maximum charge that can be held on the dome? (ke = 8.99 · 109 N·m2/C2)
A point charge Q is located at the center of a very thin, spherical metal shell. what is the electric potential of the shell
A hawk flies in a horizontal arc of radius 12 m at a speed of 4 m/s, and increases its speed at the rate of 1.20 m/s2. Find the acceleration (and direction) under these conditions.
You want to double the resonance angular frequency of a series R-L-C circuit by changing only the pertinent circuit elements all by the same factor
What focal length does the lens require
A uniform electric field of magnitude 249 V/m is directed in the negative y direction. A +13.4 ?C charge moves from the origin to the point (x, y) = (15.0 cm, 50.8 cm)
A certain gasoline engine has an efficency of 30% what would the hot resevoir temp be for a carnot engine having that efficency if it operates with a cold resevoir temp off 200C
An asteroid is discovered heading straight toward Earth at 13 km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 26 degree to its original path at..
The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of ? = 73.0° above the horizontal. If the radius of the tub is r = 0.455 m, what rate of revolution..
A bat at rest sends out ultrasonic sound waves at 49.4kHz, What is the received sound frequency
While visiting Planet Physics, you toss a rock straight up at 14m/s and catch it 2.5s later. determine the mass of Planet Physics
A 40 cm-diameter potter's wheel with a mass of 27 kg is spinning at 180 rpm. how long will it take for the wheel to come to a stop in her hands
a workman on the scaffolding outside one of the science classrooms drops a wrench. a physics student bored with the
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