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A metal sphere of mass M and radius R is charged up so that its surface is at an electric potential V. What is the electric potential at the center of the sphere? Assume V=0 at infinite distance.
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
An idealized voltmeter is connected across the terminals of a 12.5-{\rm V} battery, and a 73.5-\Omega appliance is also connected across its terminals. What is the internal resistance of the battery?
Unpolarized light of intensity I0 passes through six successive Polaroid sheets each of whose axis makes a 40? angle with the previous one
Assume you are swimming in a river while a friend watches from the shore. In calm water, you swim at a speed of 1.25 m/s. The river has a current that runs at a speed of 1m/s.
A beam of initially unpolarized light passes through a sequence of three ideal polarizers. What is the ratio of the intensity of light
A child applies a torque of 1200 N*M to a merry go round. The rotational interia of the merry go round is 900 kg*m 2. What is the net torque acting on the merry go round
When a mass of 7.15 kg is attached to the spring, the spring stretches by 0.0105 m. Calculate the kinetic energy the mass possesses
When a potential difference of 2 V is applied across the ends of a wire of 5 m length, a current of 1A is found to flow through it. Calculate: the resistance per unit length of the wire
In the figure, two ideal solenoids link the circuit, with the solenoids' magnetic fields directed as shown. Use Kirchoff's rules to find the current in each resistor
A stone is dropped into a river from a bridge 41.9 m above the water. What is the initial speed of the second stone
The planet Jupiter revolves around the Sun in a period of about 12 years (3.79 × 108 seconds). What is its mean distance from the center of the Sun? The mass of the Sun is 1.99 × 1030 kilograms. A. 1.1 × 10^11 meters B. 1.5 × 10^11 meters C. 2.3 ×..
The 6.275 kg sledge hammer shown on the right has a small hole drilled at point "P" and a metal rod is inserted to act as a low-friction pivot. When the hammer is displaced slightly and allowed to swing from the pivot, its period of oscillation is ..
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