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Two particles with charges +3e and -8e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 5.14 x 10-11 m apart. What is EPEfinal - EPEinitial, which is the change in the electric potential energy?
A physics student propses to pull their car out of a mudhole on a country road by stretching a rope between the front of the car and an immovable object in front of the car, and then push sideways at the midpoint of the rope.
A rotating door is made from four rectangular glass panes, as shown in the figure. The mass of every pane is 66.0 kg. A person pushes on the outer edge of one pane with a force of F =71.4 N that is directed perpendicular to the pane. Decide the magni..
A curve of radius 72m is banked for a design speed of 125km/h.If the coefficient of static friction is 0.34 (wet pavement), at what range of speeds can a car safely handle the curve
Twenty particles, each of mass m0 and confined to a volume V, have various speeds: two have speed v, three have speed 2v, five have speed 3v, determine the pressure they exert on the walls of the vessel
An object of mass 3.3 kg is projected into the air at a 55° angle. It hits the ground 3.4 s later. What is its change in momentum while it is in the air
Keeping a constant speed of 0.6 m/s, a marble of mass 18 g rolls back & forth across a shoebox that is 14 cm high & 2 mm thick. Estimate the probability of its escaping through the wall of the box by quantum tunnelling.
A power supply has an open-circuit voltage of 35.0 V and an internal resistance of 2.00 O. What additional resistance should be added in series
If two successive overtones of a vibrating string are 270 Hertz and 315 Hertz, Evaluate what the frequency of the fundamental
Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to six times the earth's radius of 6.38 106 m. . (b) Find the satellite's orbital period.
A boy whirls a stone in a horizontal circle of radius 1.2 m and at height 2.0 m above ground level. find the magnitude of the centripetal acceleration of the stone
A 25 Newton block rests on a horizontal surface. The coefficients of kinetic and static friction between the surface and the block are μk= 0.60 and μs = 0.80. Find the force of friction acting on the block for each of the following value of T =15 N
a ball of mass 1.00kg moves due east at 3.00 m/s. a ball of mass 2.00 kg moves due south at 2.00 m/s. they collide at the origin. what is the final velocity of the other ball
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