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Nichrome wire of cross-sectional radius 0.768 mm is to be used in winding a heating coil. If the coil must carry a current of 8.25 A when a voltage of3.00 multiply.gif 102 V is applied across its ends, find the following.
(a) the required resistance of the coil.
(b) the length of wire you must use to wind the coil.
The box is taken up a mountain where the air pressure outside the box is 8.00 104 Pa. The inside of the box is completely evacuated. Elucidate the magnitude of the force required to pull the lid off the box?
a bee that is 3m away from a person produces a buzzing sound that is barely audible (the intensity is the threshold of hearing I0) What is the decible level of 1000 bees
A 0.280 kg ball is dropped from rest at a point 1.35m above the floor. The ball rebounds straight upward to a height of 0.780 m. What are the magnitude and direction of impulse of the net force applied to the ball during the collision with the flo..
A coffee filter of mass 1.4 grams dropped from a height of 2 m reaches the ground with a velocity of 0.6 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter.
The spring is kept from pushing them apart, since they are holding each other. When they release their arms, Al moves off in one direction at a speed of 1.16m/s, while Jo moves off in the opposite direction at a speed of 0.973m/s. Assume that frictio..
A rubber ball is bouncing along the lever floor. after each bounce it only goes back up to half of the height that it just fell from. make a proportional sketch displaying this ball bouncing six times.
Two small spheres, each with mass m = 3.1 g and charge q, are suspended from a point by threads of length L = 0.23 m
What is the approximate mass of the cat.
A 190 kg block is pulled at a constant speed of 4.4 m/s across a horizontal floor by an applied force of 138 N directed 37° above the horizontal. Illustrate what is the rate at which the force does work on the block?
Medical x rays are taken with electromagnetic waves having a wavelength around 0.104nm. What is the wave number of such waves
Find out the frequency of a sound wave moving through iron at 25 degrees Celsius with a wavelength of 0.601m.
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), whereas its index of refraction is 1.530 at a wavelength of 410 nm (violet), what is the angle of refraction for each wavelength
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