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a ball of masses m1022kg that is moving with a speed of 55ms positive x direction collided head on and elastically with
two masses m110kg and m2 4kg are released from rest m1 moves down the incline a distance x8m and m2 moves up a
visible light ranging from 400 nm to 700 nm is focused on a diffraction grating the entire first order is observed but
a small 523 g model rocket lifts off the ground accelerating quickly 42 s later the engine cuts out at a height of 845
determine the total number statescm3 of energy states in silicon betweennbspevnbspandnbspevnbsp-4nbspktnbspatnbspt350 k
a 22 kg brick is dropped from a height of 10 m onto a small nail stuck vertically in a piece of wood assuming the nail
questionthe contestant in a circus game must hit a pad with a 50 kg mallet to cause a 10 kg object to slide up a pole
two stars are 80 light years away and can just be resolved by a 20 in telescope equipped with a filter that only allows
a protons speed as it passes point a isnbsp56000nbspms it follows the trajectory shown in the figure below in
in a typical van de graaff linear accelerator protons can be accelerated through a potential difference of 20 mv what
a 93nbspkgnbspdog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is
a basketball of mass 0643 kg is passed to a player of mass 900 kg who jumps off the floor while catching the ball the
a 6000nbspkgnbspopen train car is rolling on frictionless rails atnbsp250nbspmsnbspwhen it starts pouring rain a few
an ice hockey puck slides along the ice atnbsp15nbspmsnbspa hockey stick delivers an impulse ofnbsp84nbspkgsdotms
erica 35 kg and danny 48 kg are bouncing on a trampoline just as erica reaches the high point of her bounce danny is
a man standing on very slick ice fires a rifle horizontally the mass of the man together with the rifle is 70nbspkg and
as part of a safety investigation two 1900 kg cars traveling at 17 ms are crashed into different barrierspart a find
a child is sliding on a sled atnbsp13nbspmsnbspto the right you stop the sled by pushing on it fornbsp070nbspsin a
a certain radio station broadcasts at 1017 megahertz this is the frequency of oscillation of electrons in the
in the figure below a crowbar is used to lift a weight if a down ward force ofnbsp247nbspn is applied to the end of the
a tennis ball of massnbsp584nbspnbsp10-2nbspkg initially moving at a speed ofnbsp280nbspms hits a wall and rebounds
radio waves are electromagnetic waves that travel at a speed ofnbsp300nbspnbsp108nbspms the speed of light an am radio
a 78 kg baseball player jumps straight up to catch a hard-hit ballif the 140 g ball is moving horizontally at 23 ms and
a cyclist coasts up a 119deg slope traveling 210 m along the road to the top of the hill if the cyclists initial speed
a pendulum clock is accurate on earth where the period of its pendulum is 100 sa find its period on the moon where