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Four identical point charges (q = +10.0 µC) are located on the corners of a rectangle as shown in Figure. The dimensions of the rectangle are L = 55.0 cm and W = 25.0 cm. Calculate the magnitude and direction of the resultant electric force exerted on the charge at the lower left corner by the other three charges.
Two blocks on a frictionless table, A and B, are connected by a massless string. What is the ratio (ma/mb) of the blocks masses
A student at the top of a building of height h throws one ball straight upward with an initial speed of v0. Write an expression for the time it takes for each ball
A laser with wavelength 650 nm is incident on a single slit with width 10 mm. A screen is placed 1 m beyond the slit. How far apart will the first dark bands on either side of the central maximum be?
When a 6.0 µF capacitor is connected to a generator whose rms output is 26 V,the current in the circuit is observed to be 0.40 A. What is the frequency of the source?
A flat, uniform, circular disk (R = 2.25 m, m = 84.0 kg) is initially at rest, but it is free to rotate in the horizontal plane about a vertical, frictionless axis through its center.
What is the mass of a puppy that sits on the other piston and balances the person?
A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers, If the vehicle has a speed of 19.0 m/s at point A, what is the force of the track on the vehicle at this point
One end of a brass bar is maintained at 296°C, while the other end is kept at a constant however lower temperature. The cross-sectional area of the bar is4.00 10-4 m2. Because of insulation, there is negligible heat loss during the sides of the bar.
A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, How far should she stand from the Washington Monument
The 100 block in 4.7 to reach the floor after being released from rest. What is the mass of the block on the left.
The order in which vectors are added does not matter. Mathematicians say that vector addition is commutative. Which ordinary arithmetic operations are commutative? Which are not?
If the reciever that he is trying to throw the ball to runs at 8 m/s, how long a time t should the quarterback wait before throwing the ball to complete the pass at his maximum rang
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