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A standard 100 Watt (120 Volt) light bulb contains an 8.00 centimeter long tungsten filament. The high-temperature resistivity of tungsten is 9.0 ×107 Ωm.
Part A Compute what is the diameter of the filament?
A 270-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 34° with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
A bar magnet is oriented with its magnetic dipole moment at 57.3° to the direction of a 0.0357-T magnetic field, Find the magnitude of the magnet\'s magnetic dipole moment
A 37.0-kg child swings in a swing supported by two chains, each 3.06 m long. The tension in each chain at the lowest point is 436 N. Find the child's speed at the lowest point
Near the surface of the Earth there is an electric field of about 150 V/m which points downward. Use conservation of energy to determine the difference in the speed of the two balls when they hit the ground
A 2.1 kg solid sphere ( I= 0.4mR2 ) rolls along a horizontal surface with a speed of 7.8 m/s. What is the total kinetic energy of the sphere
a jet engine is moving an airplane forward at a speed of 900 km/hr. If the thrust of the engine is 1x10^5 N what is the power developed by the engine
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
Unpolarized light passes through two polarizers in turn with polarization axes at 41° to one another. What is the fraction of the incident light
A person walks up a stalled 14 m long escalator in 81 s. When standing on the same escalator, now moving, the person is up in 48 s. How much time would it take that person to walk up the moving escalator?
object o stands on the central axis of a concave spherical mirror at a distance of 40 cm. the distance between the
a positron q e moves at 4.88 x 107 ms in a magnetic field of magnitude 0.410 t. the magnetic force on the positron has
q1.a thrill-seeking cat with mass 4.00 kg is attached by a harness to an ideal spring of negligible mass and oscillates
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