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A capacitor is made from two hollow, coaxial, iron cylinders, one inside the other. The inner cylinder is negatively charged and the outer is positively charged; the magnitude of the charge on each is 19.0pC. The inner cylinder has a radius of 0.300mm, the outer one has a radius of 6.40mm, and the length of each cylinder is 20.0cm.Part AWhat is the capacitance?Use 8.854×10^?12 F/m for the permittivity of free space.Part BWhat applied potential difference is necessary to produce these charges on the cylinders?
Illustration on Eratosthenes' process
A ball is launched directly upward from ground level with an initial speed of 20 m/s. (Air resistance is negligible.) What is the greatest height reached by the ball
The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all di..
Consider two parallel-plate capacitors, C1 and C2, that are connected in parallel. The capacitors are identical except that C2 has a dielectric inserted between its plates. What is the final voltage across the two capacitors
A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.30 . At 30.0 after blastoff, the engines suddenly fail, How high above the launch pad will the rocket eventually go
A 99 kg girl dives off a raft 2.25 square meters floating in a freshwater lake. By how much does the raft rise in cm
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.19 106 m/s. Find the centripetal acceleration of the electron
After the box starts sliding, the person continues to push it, exerting the same force. What is the acceleration of the box
Two long, parallel conductors carry currents I1 = 3.10 A and I2 = 5.10 A, both directed into the plane of the computer screen. Find out the magnitude and direction of the resultant magnetic field at a point midway between the wires. (b) Find out the ..
In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 470 nm. What is the stopping voltage required if light of wavelength 410nm is used
What is the greatest possible distance from the wall
A firehose 15 m long is uncoiled by pulling the nozzle end horizontally along a frictionless surface at the steady speed of 2.9 m/s. How much work has been done on the hose by the applied force
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