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a solid wood door 90 cm wide by 200 m tall has a mass of 350 kg it is ajar and at rest a ball with a mass of 500 g is
when viewed by an observer on the earth light from a distant galaxy is doppler shifted to the red such that the ratio
a child is trying to stack two uniform wooden blocks 12 cm in length so they will protrude as much as possible over the
a wire has a diameter fo 200mm and stretches 20 when a force of 628n is applied to it what is the elastic youngs modulu
the intensity due to a number of different sources is the sum of the individual intensitiesa when all of the octomoms
if an electron moves perpendicular to the same magnetic field with this same translational speed what is the radius of
an 660-cm-diameter 300 sphere is released from rest at the top of a 170-m-long 200 incline it rolls without slipping to
a chain of movie theaters is decorated with light fixtures that when the white light passes through a transparent plate
a 2-mol ideal gas system undergoes an adiabatic process where it expands and does 20 j of work on its environment how
the image behind a convex mirror radius of curvature 96 cm is located 15 cm behind the mirrora where is the object
in the dangerous sport of bungee-jumping a daring student jumps from a hot-air balloon with a specially designed
a heat engine with an efficiency of 200 performs 2500 j of work how much heat is discharged to the lower temperature
steam at 100degc is added to ice at 0degca find the amount of ice melted and the final temperature when the mass of
a ski jumper starts from rest 590 m above the ground on a frictionless track and flies off the track at an angle of
300 g of water at 45degc are poured into an 800-g aluminum container with an initial temperature of 10degc the specific
the coefficient of linear expansion of copper is 17 times 10-6 k-1 a sheet of copper has a round hole of radius 15 m
a ferris wheel is moving at an initial angular velocity of 10 rev39 s if the operator then brings it to a stop in 33
a car starts from rest and then accelerates uniformly to a linear speed of 14 ms in 38 s if the tires have a radius of
consider a tennis ball that is hit by a player at the baseline with a horizontal velocity of 50 ms about 110 mih the
a uniform cylindrical pulley of mass m127 kg and radius r0636 m rotates freely about a fixed horizontal axis a block of
a single convex lens projects a focused image of an object onto a screen if the lens is 15 cm from the object and and
work and power problem in physics a bacterium moves through water at a constant velocity the bacterium uses its
a uniform circular disk merry-go-round of radius r176 m and mass m284 kg freely rotates about a vertical axis which is
a uniform cylinder of mass m630 kg and radius r0132 m is released from rest on an inclined plane theta327 deg and rolls
an electron going east with speed ve 04c collides with a proton going north with speed vp 03c this collision will