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Four identical charges (+2.9 µC each) are brought from infinity and fixed to a straight line. The charges are located 0.59 m apart. Decide the electric potential energy of this group.
A 3.00-kg steel ball strikes a massive wall at 10.0 m/s at an angle of 60.0 degrees with the plane of the wall. what is the average force exerted by the wall on the ball
An 8.00 gram bullet is fired into a 2.20 kilogram block initially at rest at the edge of a frictionless table of height 1.00 meter. Estimate what is the initial speed of the bullet
q1. a motorist drives along a straight road at a constant speed of 15.0 ms. just as she passes a parked motorcycle
Tendons are strong elastic fibers that attachmuscles to bones. To a reasonable approximation, they obey Hooke'slaw. By how much canthe tendon stretch without rupturing
A star has a mass of 1.87 x 1030 kg and is moving in a circular orbit about the center of its galaxy. The radius of the orbit is 3.5 x 104 light-years, Determine the tangential speed of the star
four point charges of magnitude 4.7 microc are at the corners of a square of side 3 m. a find the electrostatic
Five forces act on an object: (1) 60.0 N at 90°, (2) 40.0 N at 0°, (3) 80.0 N at 270°, (4) 40.0 N at 180°, and (5) 50.0 N at 60°. What is the magnitude and direction of a sixth force that would produce equilibrium?
at the top of the loop what is the magnitude of the force exerted on a 55kg rider by the roller-coaster seat?nbspat the
If the radius of curvature of the cornea is 0.65cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the floor and that its period is 16.1 s. The acceleration of gravity is 9.8 m/s2 .
A golf ball is hit horizontally from the edge of a ramp. It lands at an elevation 200 m below and its trajectory upon landing is 45° angle below the horizontal
Three point mass particles are located in a plane: 3.67 kg located at the origin, How far is the center of mass of the three particles from the origin
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