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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
the equation for a equilibrium reaction ab ab following le chateliers principal if the concentration of a is increased
an iron bar of mass 099 kg slides down a frictionless incline 094 m high at the bottom of the incline it collides and
a force applied to an object of mass m1 produces an acceleration of 300 ms2 the same force applied to a second object
what is the percent yield of a reaction in which 210 g phosphorus trichloride reacts with excess water to form 100 g
a 018kg rubber ball is dropped from a height of 12m above the floor and it bounces back to a height of 070mpart a what
calculate the mass of each product formed when 175 g of silver sulfide reacts with excess hydrochloric acid4
chromiumiii oxide reacts with hydrogen sulfide h2s gas to form chromiumiii sulfide and water 4 significant
your are asked to prepare a 08500 m solution of aluminum nitrate you find that you only have 5000 g of the solidif 2500
the bitter-tasting compound quinine is a component of tonic water and is used as a protection against malaria it
a race car makes two and a half laps around a circular track in 51 min what is the cars angular
the g string on a violin has a fundamental frequency of 196 hz it is 310 cm long and has a mass of 0500 g while this
determine the empirical formula of each of the following compounds type your answer using the format ch4 for ch4 and