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A wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite charge on the car. If a car has a 1000 kg mass and the ball is to be able to lift it from a distance of 1.00 m: (a) What minimum charge must be used? (b) What is the electric field near the surface of the ball? (c) Why are these results unreasonable? (d) Which premise or assumption is responsible?
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
A lense with a circular aperture of 1cm in diameter is just barely capable of serperating two objects, What's the wavelength of the light from the two objects
Two parallel, uniformly charged, infinitely long wires carry opposite charges with a linear charge density ? = 2.15 ?C/m and are 6.69 cm apart. What is the magnitude of the electric field at a point midway between them and 54.3 cm above the plane ..
A 120 granite cube slides down a 45 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 210 steel cube at rest.
Two long straight wires are carrying current out of this page. Make the plane of this paper the x-y plane, and put one wire at the origin with 5 A., find the force per unit length on that wire
question1an automobile having a mass of 1000 kg is driven into a brick wall in a safety test. the bumper behaves like a
All the pulleys are frictionless, and the strings are massless. Illustrate what are the tensions in all the strings and what are the acceleration of the masses?
explain the shape of the distribution of sample means.
question1two blocks are associated by a light string that passes over a frictionless pulley. the block of mass m1 lies
Light of wavelength 2E-12 m undergoes compton scattering at an angle of 45 degrees, What is the wavelength of the scattered photon
The magnetic field component of the electromagnetic wave is 15.0 microT. What is the magnetic energy density of the wave
An extension cord made of two wires of diameter 0.129 {rm cm} (no. 16 copper wire) and of length 1.5 m (5 ft) is connected to an electric heater which draws 13.5 A on a 120-{rm V} line. How much power is dissipated in the cord.
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