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you dip our finger into a pot of water twice each second producing waves with crests that are separated by 015 meter
why may a heat pump have an advantage over a space heater that converts electrical energy directly into thermal
air in a cylinder is compressed to one-tenth of its original volume without change in temperature explain what happens
what is the total charge of all the electrons in 18 kg bar of molybdenum molybdenum has 42 electrons per atom and an
in 1911 ernest rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold
sam wraps a string around the outside of a 0040 m-radius 020 kg solid cylinder and utilizes it like a yo-yo when
a projectile is shot on level ground with a horizontal velocity of 20 ms and a vertical velocity of 42 ms obtain how
a block of ice at 0degc is added to a 150 g aluminum calorimeter cup which holds 210 g of water at 12degc if all
rods of copper brass and steel are welded together to form a y-shaped figure the cross-sectional area of each rod is 2
some people say that the tides on earth are caused with the pull of the moon is this statement true1 which celestial
two charges are located on the x axis one of the charges q185microc is at x130 centimeter and the other q2 -21microc is
the temperature of a 1 meter long aluminum rod is 20degc if the temperature is increased to 70degc determine the length
suppose that you have a mass of 500 kg and earth has a mass of 597 x 1024 kgthe radius of earth is 638 x 106 m1 what is
assume you cut a small gap in a metal ring if you heat the ring find will the gap become wider or
water flows through a 130 centimeter diameter fire hose at a rate of 453 msa obtain the rate of flow through the hose
an apparatus like the one cavendish utilized to find g has a large lead ball that is 59 kg in mass and a small one that
the large piston in a hydraulic lift has a radius of 250 cm2 obtain what force must be applied to the small piston with
an object is observed moving at 060 c when it explodes in the reference frame of the object the explosion disburses
when a steadily flowing gas flows from a larger diameter pipe to a smaller diameter pipe explain what happens to the
a ball is thrown at a 600deg angle above the horizontal across level ground it is thrown from a height of 200 m above
in a deep dive a whale is appreciably compressed by the pressure of the surrounding water explain what happens to the
each vertical steel column of an office building supports a weight of 130 x 105 n and is compressed to 590 x 10-3
a speeder traveling at 060 c passes a police car after a 20 s reaction time the police take off at 080 c in pursuit of
a steel column in a building has a cross-sectional area of 3500 cm2 and supports a weight of 25 x 105 newton determine
friction provides the force required for a car to travel around a flat circular race track what is the maximum speed at