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A Block A block in the shape of a rectangular solid has a cross-sectional area of 4.00cm2 across its width, a front-to-rear length of15.1 cm, and a resistance of 925 . The material of which the block is made has 5.33 multiplied by 1022 conduction electrons/m3. A potential difference of 35.5 V is maintained between its front and rear faces.
a) What is the current in the block?b) If the current density is uniform, what is its value?c) What is the average or drift speed of the conduction electrons?d) What is the magnitude of the electric field in the block?
A typical ten-pound car wheel has a moment of inertia of about 0.35kg m^2. What is the rotational kinetic energy of the rotating wheel
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q1. assume unpolarized light of intensity 197 wm2 falls on the polarizer in the figure and the angle in the drawing is
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A kettle containing 9kg of water reached its boiling point. How much energy, in joules, is required to boil the kettle dry
A 4.0 kg ball is on the end of a 1.6 m rope which is fixed at O. The ball is held at point A, with the rope horizontal, and is given an initial downward velocity. What is the initial velocity of the ball
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A sled is being pulled along a horizontal surface by a horizontal force of magnitude 600 N. Find the instantaneous power created by force
An inductor has a 54.0-? reactance when connected to a 60.0-Hz source. What is the maximum current in the inductor
a particle with a charge of 1.60*10^-19 and a mass of 1.67*10^-27kg is found moving in a uniform magnetic field of a strength 1.50T. calculate the kineic energy of the particle
A rock is dropped from a high tower and falls freely under the influence of gravity. Which one of the following statements concerning the rock as it falls is true? Neglect the effects of air resistance.
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