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The electric potential at the center of a square is 3 V when a charge of +Q is located at one of the square's corners. What is the electric potential at the square's center when identical charges of -Q are placed at the other three corners of the square?
When a carpenter shuts off his circular saw, the 10.0 inch diameter blade slows from 4250 rpm to 0.00 in 1.00 s. What is the distance traveled by a point on the rim of the blade during the deceleration
In the steady state 1.8 1018 electrons per second enter bulb 1. There are 6.3 1028 mobile electrons per cubic meter in tungsten. The cross-sectional area of the tungsten filament in bulb 1 is 1 10-8 m2. The electron mobility in hot tungsten is 1.2 10..
Suppose the tension in a cord is 12.0 N. If the speed of a wave in the cord is 9.50 m/s, then what must be the linear mass density of the cord
A bicycle wheel of radius r = 0.5 m starts from rest and rolls 150 m without slipping in 30 s. Calculate the number of radians through which it turns
A parallel-plate capacitor has plates separated by 0.72 mm. what is the potential difference between the plates
A cart of mass M = 1.2 kg can roll without friction on a level track. A light string draped over a light, frictionless pulley connects the cart to a hanger with mass m = 0.5 kg. The cart is released from rest, allowing it to roll, pulled by falling h..
An elevator has mass 550kg , not including passengers. The elevator is designed to ascend, at constant speed, What is the maximum number of passengers that can ride in the elevator
This is because of the average release of about 0.03 J per kilogram each year. Show that at 500 C increase in temperature for a thermally insulated chunk of granite takes about 13.3 million years. (Assume that the specific heat of capacity c of g..
q1. find flux due to a point charge q on a rectangle of sides l x b at a distance r from the charge along the center of
A rock is thrown from the roof of a building with a velocity v(0) at an angle alpha(0) of from the horizontal. Calculate the magnitude of the velocity of the rock just before it strikes the ground
A soft drink (mostly water) flows in a pipe at a beverage plant with a mass flow rate that would fill 220 0.360-L cans per minute. At point 2 in the pipe, the gauge pressure is 155 kPa and the cross-sectional area is 8.00 cm2. At point 1, 1.35 m a..
A bullet of mass m= 0.0230 kg is fired along an incline and imbeds itself quickly into a block of wood of mass M= 1.30 kg. find the speed of the bullet just before it hits the wood
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