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What mass of Ni2+ is produced in solution by passing a current of 67.0 A for a period of 13.0 h , assuming the cell is 88.0 % efficient?
question the angular velocity of a flywheel obeys the equation wzt a bt2 where t is in seconds and a and b are
A lens placed at the origin with its axis pointing along the x axis produces a real inverted image at x=-24cm that is twice as tall as the object
If a bullet that leaves the muzzle of a gun at 299 m/s is to hit a target 81.0 m away at the level of the muzzle, How far above the target is this point
A car is traveling around a horizontal circular track with radius r = 150 m at a constant speed v = 28 m/s as shown, What is the magnitude of the car's acceleration, What is the x component of the car's acceleration when it is at point A
Assume a distant star functions as a blackbody at a temperature of 12,000 K and produces light at a rate of 7.72 x 1030 W. What is the radius of the star
Ilya and Anya each can run at a speed of 7.10mph and walk at a speed of 3.00mph. They set off together on a route of length 5.00miles. How long does it take Ilya to cover the distance
A cannonball is shot (from ground level) with an initial horizontal velocity of 34.0 m/s and an initial vertical velocity of 25.0 m/s. find the maximum height the cannonball goes above the ground
A 70 kg crate is pushed at constant speed up the frictionless 35° ramp shown in the figure. What horizontal force F is required? What force is exerted by the ramp on the crate
(a) What is the magnitude of the frictional force? Express your answer as a multiple of mg. mg (b) What is the magnitude of the acceleration of the block? m/s2 Suppose that the friction coefficients are μs = 0.32 and μk = 0.26?.
My wife Margie has lost most of her accommodation. She has a nearpoint of 120 cm and would like to read as close as 35 cm from her eyes. What power reading glasses should Margie use? Assume the lenses in the glasses are 2 cm from the eye.
Four charges are placed at the vertices of a square, centered at the origin. If each side of the square has a length of 0.224 m, what is the strength and direction of net electric field at the origin? Express your answer in terms of the charge ma..
q1. a student stands several meters in front of a smooth reflecting wall holding a board on which a wire is fixed at
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