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A parallel-plate capacitor has a plate area of 7.2 cm^2, and a capacitance of 9.3 pF. What is the plate separation? The value of the permittivity of a vacuum is 8.8542 × 10-12 C^2/N · m^2. Answer in units of m.
The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red) and 486 nm (blue). compute the distance between the first-order red and blue fringes
A ball of mass 7 kg is thrown straight up in the earth's gravitational field with an initial speed v0 = 16 m/s. What is the initial kinetic energy of the ball
An object weighing 307 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 270 N. Immersed in oil, the object weighs 282 N. compute the density of the object.
A 45.0 kilogram girl is standing on a 159 kilogram plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. Find the velocity of the plank relative to the surface of ice
Four point charges, q, are fixed to the four corners of a square that is 11.2 cm on a side. An electron is suspended above a point at which its weight is balanced by the electrostatic force due to the four point charges, at a distance of 11 nm abo..
A stalactite on the roof of a cave drips water at a steadyrate to a pool 4.0m below. As one drop of water hits the poola second drop is in the air, How many drops per minute fall into the pool
A rifle is aimed horizontally at a target 54.0m away. The bullet hits the target 2.60cm below the aim point, What was the bullet's flight time
A potter's wheel having a radius 0.45 m and a moment of inertia of 11.4 kg · m2 is rotating freely at 48 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 74 N. Find the effe..
A 1.00 kg block Is resting against a light, compressed spring at the bottom of a rough plane inclined at an angle of 30 degrees. Kinetic friction between box and plane is 0.100. Suppose the spring is compressed 10 cm from its equilibrium length.
A yo-yo has a rotational inertia of 1180 g·cm2 and a mass of 148 g. Its axle radius is 3.58 mm, and its string is 139 cm long. The yo-yo rolls from rest down to the end of the string. What is the magnitude of its linear acceleration?
When responding to sound, the human eardrum vibrates about its equilibrium position. Obtain what is the maximum acceleration of the eardrum
A annular disk (a disk with a hole in it) has an inside radius a and an outside radius b and a uniform surface charge density sigma. What is the potential at a point a perpendicular distance z-naught from the center?
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