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A point charge Q = + 87.1 μC is held fixed at the origin. A second point charge, with mass m = 0.0576 kg and charge q = -2.87 μC, is placed at a location 0.323m,
(a) What is the potential energy of the system?
(b) If the second charge is released from rest, what is its speed when it reaches the point (0.121, 0).
Sean is running a 100m dash. When the starter's pistol fires, he leaves the starting block and continues speeding up until he reaches his top speed of 11m/s 6s into the race. He holds this speed for 2s and then gradually slows down until he crosse..
An electron of mass m leaves one end of a TV picturetube with zero initial velocity and travels in a straight line toan accelerating grid, Find the time to reach the grid
Find the weight in Newtons (N) and the mass in kilograms (kg)of a 40 oz. Bottle of ketchup
a 1.6 kg block is released from rest and allowed to slide down a frictionless surface and into a spring. the far end of
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 6.60s apart. How far away did the impact ..
Vertically polarized light with intensity Io is normally incident on an ideal polarizer. As the polarizer is rotated, the intensity I of light transmitted through the polarizer varies with the orientation of the polarizer (Θ), where Θ = 0 corresponds..
How much work is needed to push a 132- kg packing crate a distance of 2.35 m up an inclined plane that makes an angle of 26 o with the horizontal, when inclined plane is frictionless
A 6.0 multiplied by104 kg space probe is traveling at a speed of14000 m/s through deep space.Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.0 multiplied by 105N over a distance o..
A metal cube of mass 3kg is immersed halfway in water. if the volume of water displaced is 3L, What is the density of the metal
Find out the distance traveled (in meters) by the jet as the observer watches the nose of the jet cross from one side of the moon to the other.
A hanging wire made of an alloy of aluminum with diameter 0.12 cm is initially 2.8 m long. When a 40 kg mass is hung from it, the wire stretches an amount 1.57 cm. A mole of aluminum has a mass of 27 grams, and its density is 2.7 g/cm3.
The free throw line in basketball is 4.57 m (15 ft) from the basket, which is 3.05 m (10 ft) above the floor. At what angle above the horizontal must the ball be thrown to exactly hit the basket?
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