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If the magnitude of the drift velocity of free electrons in a copper wire is 6.28 10-4 m/s, what is the electric field in the conductor?
The velocity of the wave traveling on a string is higher if you increase the length of the string (keeping the kind of string, and the tension of the string, unchanged)
q 1- how much pressure would be necessary to compress a quantity of mercury by 0.015 percent?2- two metal plates are
A projectile is fired with an initial speed of 61.7m/s at an angle of 31.9^\circ above the horizontal on a long flat firing range. Determine the total horizontal distance covered
An advertisement for a certain portable vacuum cleaner shows off its power with a photograph of the vacuum-cleaner wand suspending a bowling ball by the strength of its suction. find the weight of the heaviest ball the vacuum cleaner can lift
A 150MW laser pulse is focused with a lens to a diameter of 1.0?m. What is the laser beam's electric field amplitude at the focal point
Compute the rms speed of a nitrogen molecule at 36.0°C. At what temperature will the rms speed be half that value
This figure (|| = 10.5 m/s2) represents the total acceleration of a particle moving clockwise in a circle of radius r = 2.40 m at a certain instant of time. (a) For that instant, find the radial acceleration of the particle. m/s2 (toward the center) ..
Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic collision. Momentum is conserved. Find the direction of the final velocity of the two-object system
What amplitude of simple harmonic motion of the spring-blocks system puts the smaller block on the verge of slipping over the larger block.
(a)For a satellite to be in a circular orbit 660 km above the surface of the earth, what orbital speed must it be given (b)What is the period of the orbit (in hours)
A 120 V potential difference is applied to a space heater whose resistance is 19 ? when hot. At what rate is electrical energy transferred to heat
A cubical block of side length L has a density Dc and floats in a liquid of density Dl with a small part of the block above the liquid's surface. Determine the fraction of the volume of the block
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