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Problem: A parallel-plate capacitor with C = 14 micro F is charged so as to contain 1.6 J of energy. If the capacitor has a vacuum between plates that are spaced by 0.31 mm,
Part A: What is the energy density (the energy per unit volume)?
Include work and exact answer please! Thanks!
An old-style TV set places 50 kV across two plates of a parallel plate capacitor. What is the speed of the electron when it exits the hole in the plate
A 1 ,000-kg car travelling initially with a speed of 20 m/scrashes into the rear end of an 8,000 kg truck moving in the same direction at 15m/s. What is the speed of the entangled mass right after the collision
A typical sound level for a buzzing mosquito is 38 dB, and that of a vacuum cleaner is approximately 63 dB. how many buzzing mosquitoes will produce
Joey, whose mass is 37kg , stands at rest at the outer edge of the frictionless 250kg merry-go-round, 1.9m from its center. The merry-go-round is also at rest. What is the final angular speed of the merry-go-round
A hydraulic lift is used to jack a 970 kg car 13 cm off the floor. The diameter of the output piston is 18 cm, and the input force is 250 N. Calculate the combined work input of all of the strokes
Two thin, isolated, concentric conducting spheres of radii 5.10 cm and 14.40 cm, have net charges of 23.00 nC, What is the electric potential at 3.315 cm from the center of the spheres
A cockroach of mass m lies on the rim of a uniform disk of mass4.0m that can rotate freely about its center like a merry-go-round.Initially the cockroach and disk rotate together with an angularvelocity of .260 rad/s.
the planet neptune is 4.5 x1012m from the earth. its diameter is 4.9 x 107m. what diameter telescope objective would be
An object is moving in simple harmonic motion with an amplitude of 16 cm and a frequency of 2.0 Hz. Calculate the maximum magnitude of the velocity
An circuit consists of a 50Ω resistor in series with a 60.0 Hz source. A voltmeteracross the resistor reads 34.0 V. What is the rms current in this circuit?
A wave traveling along the x-axis is explained mathematically by the equation y = 0.50 sin (16.4πt + 0.84πx), where y is the displacement (in meters), t is in seconds, and x is in meters. What is the wavelength of the wave? What is the period of the ..
If a cell’s membrane thickness doubles but the cell stays the same size, how do the resistance and the capacitance of the cell membrane change?
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