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An electric current in a conductor varies with time according to the expression I(t) 5 100 sin (120pt), where I is in amperes and t is in seconds. What is the total charge passing a given point in the conductor from t 5 0 to t 5 1 240 s?
Two students stand opposite each other on the rim of the merry-go-round of 6m diameter and rotating at 12 rev/minute. Calculate the coriolis force on the ball
A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, How far should she stand from the Washington Monument
The cylindrical space station, 200 m in diameter rotates in order to give artificial gravity of 3.0 g for the occupants. How much time does it take, in seconds, to complete one revolution.
You would like to store 8.6J of energy in the magnetic field of a solenoid. What is the magnitude of the magnetic field inside the solenoid
A tetrahedron has an equilateral triangle base with 18-cm-long edges and three equilateral triangle sides. The base is parallel to the ground, What is the electric flux through the base
a thin rod, of length L = 1.9m and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball is attached to the other end. find the initial height of the ball
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s), what is the magnitude of the average angular acceleration of the disk
Two stretched cables both experience the same stress. The first cable has a radius of 3.1x10-3 m, and is subject to a stretching force of 370 N. Determine the stretching force on the second cable
A room with a pine ceiling measured 10 m x 6 m x 2 cm thick. On a cold day the temperature on inside of the ceiling is T1 = 24 oC and in the attic T2 = 7 oC, find the interface temperature for the pine and insulation
A light string can support a stationary hanging load of 25.8 kg before breaking. What range of speeds can the object have before the string breaks
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
A small electric car overcomes a 250 N friction force when traveling 30 km/h. How much power is dissipated in the coils
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