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a wire 438m long and 600 mm in diameter has a resistance of 150momega a potential difference of 28v is applied between
a car is towing a boat on a trailer the driver starts from restand accelerates to a velocity of 103 ms in a time of 31
you hang a floodlamp from the end of a vertical steel wirethefloodlamp stretches the wire 018 mm and the stress
two 270 cm focal length converging lenses are placed 165 cmapart an object is placed 350 cm in front of one where will
a 1320-kg car is moving due east with an initial speed of 253ms after 115 s the car has slowed down to 152 ms find the
a large hot pizza 86 cm indiameter and 20 cm thick with a temperature of 104degc floats in outer space assume
three forces act on a moving object one force has a magnitudeof 723 n and is directed due north another has a magnitude
a 65 gice cube at 0degc is heated until 60g has become water at 100degc and 50 g has become steam at 100degc how much
a 4-w night-light is plugge into a 120-v circuit and operatescontinuously for 1 year find the followinga the current it
suppose that you forget to turn the headlights off in yourparked automobile if each of the two headlights draws 3 a how
a horizontal force of 100 n is applied to move a 45-kg cartacross a 90-m level surface what work is done by the 100-n
a 200 kg block hangs without vibrating at the end of a springk500 nm that is attached to the ceiling of an elevator car
a ufo flies directly over a football stadium at a speed of50c if the proper length of the field is 100 yards what field
two billiard balls have velocities of 150 ms and -10 mswhen they meet in an elastic head-on collision what is the final
a 150-kg ball has zero kinetic and potential energy samdrops the ball into a 600-m deep well just before the ball
a particle q7510-6 c is released from rest at a point on the x-axis x 10 cm it begins to move due to the presence of a
on a summer day in houston thetemperature is 35c and the relative humidity is 77a what is the humidityb to what
a coin is placed 80 cm in front of a concave mirror the mirror produces a real image that has a diameter 4x larger
the electromagnetic wave that delivers acellular phone call to a car has a magnetic field with an rms valueof 15 x 10
two 150 v batteries -- with their positive terminals in the same direction -- are inserted in series into the barrel of
a particular engine has a power output of 500 kw and an efficiency of 220 assume theengine expels 8000 j of energy in
an aluminum rod is 195 cm longat 20degc and has a mass of 350 g if 10000 j of energy is added to the rod by heat what
hi i am working on some approximations for a magnetic train the trains weight is 17 tons and the desired speed
light from a helium - neon laser is shinedon a slit of width 002mm describe qualitatively the pattern of light seen on
in a science fiction novel a starship takes 3 days to travelbetween two distant space stations according to its own