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four point charges have the same magnitude of 24 x10-12c and are fixed to the corners of a square that is40 cm on a
a bungee jumper momentarily comes to rest at the bottom of thedive before they spring back upward at that moment
suppose that a grandfather clock a simple pendupum device is running slowly the time it takes to complete each cycleis
two forces act on a 600-kg object one of the forces is 100 nif the object accelerates at 200 ms2 what is the greatest
a police car at rest passed by a speeder traveling at a constant 130 kmh takes off in hot pursuit the police officer
the drawing shows two boxes resting on frictionless ramps onebox is relatively light and sits on a steep ramp the other
two long straight parallel wires of length 45 m carry parallel currents of 31 a and 11 aa if the wires are separated by
a solenoid is designed to produce a magnetic field of 0220 t at its center it has radius 400 cm and length 1000 cm and
as a new electrical technician you are designing a large solenoid to produce a uniform 0160 t magneticfield near the
a cyclotron is sometimes used for carbon dating carbon-14 andcarbon-12 ions are obtained from a sample of the
a long straight wire carries a current of 270 a an electron is traveling in the vicinityof the wire at the instant when
a small rubber wheel is used to drive a large pottery wheel the two wheels are mounted so that their circular edges
how many square meters of pv would it take to provide 1kwabout 13 of the power needed per person for health and
an automobiles battery is connected to an electric motor that isused to move up a load the battery stays at a constant
at the tropics the water close to the surface of the oceanis hotter than the deep water would the second law ofther
a curved portion of a highway under construction has aradius of 520 m the legal speed limit of this highway is 100 kmha
a force of 400 n accelerates a 50-kg block at 60ms2 along ahorizontal surfacea how large is the frictional forceb what
you push a 325 n trunk up a 20 degree inclined plane at a constantvelocity by exerting a 211 n force parallel to the
a 50 kg ball is whirled on a 12 m string so that the ballmoves in uniform circular motion above the horizontal plane
a lead brick with the dimensions 60 cm leftto right 50 cm front to back and 20 cm top to bottom rests on arough solid
elaine went to her outside faucet to fill a 00189m3 bucket with water to wash her car water exits with a speed of 061ms
a car is negotiating a flat circular curve of radius 50 m with aspeed of 20 ms the maximum centripetal force provided
a world-class sprinter accelerates to his maximum speed in41 s he then maintains this speedfor the remainder of a 100-m
an automobile and a truck start from rest atthe same instant with the automobile initially at some distancebehind the
a mass of 50 kg is suspended from a steel wire of diameter 10 mmand length 112 m how much will the wire stretch the