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an aluminum wire having a cross-sectional area of 300 10-6 m2 carries a current of 42 a find the drift speed of the
in a series l-r-c circuit the components have the following valuesl 215mh c 165uf and r 320 ohm the generator has an
two 500 g block of wood are 20m apart on a frictionless table a 10g bullet is fired at 400 ms towards the blocks the
as shown in the figure ball 1 with m1 400kg is connected through a mass less rod with ball 2 with m2 300kg the system
a 50g dart rests up against a spring that has been compressed 0050 metersa if 125 j of work were required to compress
a 15 kg kitten jumps down from a 20 meter high fencea what is the kittens change in egb what will be the kittens speed
when laser light of wavelenght 6338nm passes through a diffraction grating the first bright spot occurs at - 186
a 1000 kg car is traveling at a constant speed of 30 msa how much energy is transferred to internal energy as the car
find the electrical and gravitational forces between the proton and electron in a hydrogen atom which force holds it
the depth of a body of water can be found by emitting sound pulses at the surface and dectecting the pulses reflected
the treasure map in the figure gives the following directions to the buried treasure start at the old oak tree walk due
a galaxy is moving away from us with a speed of 3 x 107 m s-1 what is the frequency of the light we would observe if it
a heat engine does 3939 j of work per cycle while exhausting 58264 j of heat to the cold reservior if a carnot engine
it requires 5650 joules j of energy to lift a mass 15 feet into the air what is the weight of that mass in units of
an astronaut is being tested in a centrifuge the centrifuge has a radius of 8 m and in starting rotates according to
one of two identical 500-hz tuning forks is at rest and other is moving these produce a beat frequency of 5 hza what
two astronauts are 6761 m apart in their spaceship speaking to each other the conversation is transmitted to earth via
a heat engine does 22139 j of work per cycle while exhausting 60901 j of heat to the cold reservior if a carnot engine
two balls collide in a head on completely elastic collision ball 1 is 50 kg and is traveling with a speed of 43ms in
a 255-kg box is being pushed on a surface at a constant velocity using a force f200 n as shown at right what is the
two metal balls are hung from strings the first ball 01 kg is pulled to the side and released so that it strikes the
an air track is tilted so that it makes a small angle with the horizontal an air cart of mass 005kg is given an initial
a 263g aluminum bullet at 319 degrees c is fired at a speed of 204 ms into a large block of ice at 0 degrees c in which
a small girl and boy take a sled up to the top of a snow covered slope which is inclined 30 degrees above the
an iron bar of mass 099 kg slides down a frictionless incline 094 m high at the bottom of the incline it collides and