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what is the ratio of potential energy to kinetic energy for a comet that has now enough energy to escape from the suns
a woman enters an elevator and stands on a scale as the elevator begins to move the scale reads her apparent weight to
the trap-jaw ant can snap its mandibles shut in as little as14x10-4 s in order to shut both mandibles rotate during 91
an electron moving from the negative terminal to the positive terminal of a 12 volt battery gains or loses how much
what is the place of the centre of mass of a triangular shaped sheet of metal of uniform densitynbsp the triangle is an
what multiple of the time constant tau gives the time taken for an originally uncharged capacitor in an rc series
a vertical ideal spring is mounted on the floor and has a spring constant of 124 nm a 050-kg block is placed on the
a man pulls a 10 kg box across a smooth floor with a force of 58 newtons at an angle of 13 degrees and for a distance
assume that in the course of a measurement the bridge is balanced and then the power supply voltage changes by 10 what
the maximum wavelength that an electromagnetic wave can have and still eject electrons from a metal surface is 469 nm
water is to be pumped to a top of a building which is 145 m high what measure pressure is needed in the water line at
nbspnbspa wind turbine is initially spinning at a constant angular speed as the winds strength gradually increases the
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1 if a star formation switched off in a spiral galaxy which part of it would get fainter bulge disk halo dark matter or
several bacteria are propelled by biological motors that spin hair-like flagella a typical bacterial motor turning at a
in a large centrifuge used for training pilots and astronauts a small chamber is fixed at the end of a rigid arm that
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a long straight wire lies along the y-axis and carries a current of 104 a in the positivey direction a second long
if a silver wire has a resistance of 130 omega at 200degc what resistance does it have at 370degc neglect any change in
think an object that is in an elliptical orbit with semi major axis a 74times106 m regarding a planet of mass m
a 400 kg hollow sphere of radius 500 cm starts from rest and rolls without slipping down a 300 degree incline if the
a hunter fires a rifle and shoots a 420-g bullet at 965 ms the mass of the hunter including rifle is 725kg ignore