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The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -3 x 10-9 C placed at corner A and then at corner B.
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. how long (in minutes) must the engines be fired
question a mirror produces a 10 cm high image of an object that is only 4cm high. if the image is also real and
a pendulum with a pendulum length of 1.25 m undergoing SHM of mass 250g just released from an angel of 7 to the vertical. determine the period and frequency of the motion
A full length mirror on a closet door is 2.0 m tall. The bottom touches the floor. How long is the streak of reflected light across the floor
q1. diffraction also occurs with sound waves. consider 1900-hz sound waves diffracted by a door that is 87 cm wide.
a piano string is under a tension of t 778n. when struck the wave has a period of t 0.6ms and a wavelength of
If you were to use wire of twice the diameter, which of the above answers would change? Would they increase or reduce.
An object with a height of 2.44 cm is placed 35.3mm to the left of a lens with a focal length of 33.2 mm. Where is the image located
While driving along a country lane with a constant speed of 12 m/s, you encounter a bump in the road that has a cross section. find the normal force on a 67 kg person in your car as you pass over the top of the bump
In a local bar, a customer slides an empty beer mug down the counter for a refill, With what velocity did the mug leave the counter
an air bubble has a volume of 1.35 cm3 when it is released by a submarine 105 m below the surface of a lake. what is
A boy of mass 58.1 kg is about to disembark from a canoe of mass 36.3 kg, How far is the boy from the dock when he reaches the bow
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