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A point charge with charge q1= 2.90 mC is held stationary at the origin. A second point charge with charge q2= -4.30 mC moves from the point (0.170m , 0) to the point (0.235m , 0.255m ).
How much work W is done by the electrostatic force on the moving point charge?
A 7700-kg boxcar traveling 18m/s strikes a second car. The two stick together and move off with a speed of 5.0m/s. What is the mass of the second car
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 75.8kg, What is the final speed of the crate if both Jack and Jill jump simultaneously and in the same direction
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a 5-kg block is sent sliding across a frictionless table at a speedof 0.75 ms. it strikes the free end of an ideal
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A plane flies 429 km east from city A to city B in 45.0 min and then 969 km south from city B to city C in 1.40 h, find its average speed (in km/h)
A hockey puck is sliding across a frozen pond with an initial speedof 9.9 ms. It comes to rest after sliding a distance of28.5 m. What is the coefficient of kinetic friction between the puck and the ice?
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the dielectric constant for polystyrene filling is 2.5. a coaxial cable consists of a cylindrical metal sheath with
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