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for a system of two particles we often let the potential energy for the force among the particles approach zero as the
at one instant a 175kg sled is moving over horizontal surface of snow at 350ms after 875s has elapsed the sled stops
an object is placed 55 cm in front of a converging lens with a focal length equal to 5 cm1 is the image real or
a horizontal circular platform m 731 kg r 307 m rotates about a frictionless vertical axle a 933 kg student walks
an airplane with a mass of 2010 6 kg has the air flow past the lower surface of the wings at 75 ms if the wings have a
a proton and an electron have the same kinetic energy and travel in parallel paths as they enter a region of constant
white light is incident from air onto a triangular prism at a 45 degree angle by respect to the normal it refracts at
a stone of mass 3 kg is thrown at an angle of 20o below the horizontal with speed 30msec from the edge of a cliff that
the headlights on a certain car are gauged to be 1 m apart the diameter of the pupil in a human eye is 25 mm what is
a new material is found to be superconducting below 94 k how much resistance will a 93 mm long sample of this material
an n-turn square coil with side l and resistance r is pulled to right at constant speed v in the positive x-direction
the doppler effect for light is exactly the same because it is for sound hubble discovered that things further away
a person with a mass of 52 kg runs with a speed of 68 ms jumps onto the outer rim of a merry-go-round the
the axis of a cylindrical container is vertical the container is filled by equal masses of water and oil the oil floats
the earth produces an inwardly directed electric field of magnitude 150vm near its surfacenbspa if the potential of the
a thin stick of mass m 43 kg and length l 17 m is hinged at the top a piece of clay mass m 07 kg and velocity v 40 ms
compact discs and long-playing records are made from same materials the former have a diameter of about 12 cm and the
a block of a certain material begins to slide on an inclined plane when the plane is inclined to an angle theta 571deg
energy is produced by the sun by nuclear fusion reactions in which matter is converted into energy we can gauge that
a wheel is spinning at 53 rads it undergoes an angular acceleration of 44 radsnbspnbsp 2 until it reaches an angular
1 a 30 cm highlighted cross is placed in front of a biconvex lens at a distance of 10 cm from the lens this lens
a worker drives a 0500 kg spike into a rail tie by a 250kg sledgehammer the hammer hits the spike with a speed of 650ms
while taking photographs in death valley on a day when the temperature is 530degc bill hiker finds that a certain
a fly appears to be upside down and three times its actual size when viewed during a converging lens with a focal
the asteroid belt circles the sun among the orbits of mars and jupiter one asteroid has a period of 50 earth years1