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a dipole moment is placed in a uniform electric field oriented along an unknown direction the maximum torque applied to
a supertrain of proper length 97 m travels at a speed of 091c as it passes through a tunnel having proper length 50 m
the pressure of a gas is kept constant while 3 m3 of the gas at an initial temperature of 50oc is expanded to 9 m3 what
an atomic clock moves at 1400 kmh for 115 h as measured by an observer using an identical clock on earth how many
some bacteria are propelled by biological motors that spin hair-like flagella a typical bacterial motor turning at a
an astronaut is traveling in a space vehicle that has a speed of 0510c relative to earth the astronaut measures his
an astronaut at rest on earth has a heartbeat rate of 73 beatsmin when the astronaut is traveling in a spaceship at
a man stands on a scale in an elevator that is accelerating upward the scale reads 8397 n when he picks up a 280 kg box
three forces in the x-y plane act on a 720 kg mass 1310 n directed at 5030o 1180 n directed at 1300o and 1040 n
a certain laboratory experiment requires an aluminum wire of length of 360 m and a resistance of 230 at 200degc what
a set of crash tests consists of running a test car moving at a speed of 128 ms into a solid wall strapped securely in
a postal worker pushes a 160 n bag of mail up a 31 degree ramp at a constant velocity the ramp exerts a frictional
a piano worker pushes a 5670 n piano up a 13 degree ramp at a constant velocity the ramp exerts a frictional force of
in astronomy it is common to expose a photographic plate to a particular portion of the night sky for quite some time
a pirate ship is locaed 560 m from a fort that is defening habour entrnce of an island a defense cannon at sea level
if a disk rotating at 500 rpm couples to a stationary disk with five times the moment of inertia what is the angular
the wave function for a wave on a taut string is yx t 0335 sin9t 3x 4 where x and y are in meters and t is in
a generator rotates at 71 hz in a magnetic field of 50x10-2 t it has 1000 turns and produces an rms voltage of 150v and
consider a cylindrical segment of a blood vessel 350cm long and 240mm in diameter what additional outward force would
a step-down transformer has a turns ratio of 110 and its primary is connected across the terminals of a standard 120-v
a 80g 39-cm-long rod hangs vertically on a frictionless horizontal axle passing through its center a 14g ball of
a 1200 kg car whose transmission is in neutral is coasting down a 10 hill with its brakes used to maintain a constant
a mass m 950 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration