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consider an infinite straight wire with a current i derive asymbolic expression for the magnetic field at a distance r
a steel cable is stretched across a gorge the cable is 190 m long and has a mass of 44 kg when one end of the cable is
in a circus performance a monkey is strapped to a sled and bothare given an initial speed of 50 msup a 250deg inclined
a skier starts from rest at the top of a hill that is inclined at104degwith the horizontal the hillside is 245 m long
a raindrop inside a thundercloud has charge8e- what is the electric force on the raindrop if the electric field at its
a 210 kg child on a 100 m long swing is released from rest when theropes of the swing make an angle of 330deg with
a 720 kg base runner begins his slideinto second base when he is moving at a speed of 4 ms the coefficient of friction
a submarine is 319 m horizontally out from the shore and 111 m beneath the surface of the water a laser beam is sent
the electric field due to a charged point object has amagnitude of 250 nc at a distance of0019 m from the objecta find
the drawing shows a top view of a square room one wall is missingand the wall on the right is a mirror frompoint p in
a charge of 131 microc is heldfixed at the origina if a -525 microc charge with a mass of397 g is released from rest at
in a popular amusement park ride a rotating cylinder of radius300 m is set in rotation at anangular speed of 600 rads
when chasing a hare along a flat stretch of ground agreyhound leaps into the air at a speed of 109 ms at an angle of
a diver springs upward from a boardthat is three meters above the water at the instant she contactsthe water her speed
a 27 pound meteorite struck a car leaving adent 10 cm deep in the trunk ifthe meteorite struck the car with a speed of
a uniform magnetic field is perpendicular to the plane of acircular loop of diameter 86 cm formed from wire of diameter
an indestructible bullet 200 cm long is fired straightthrough a board that is 100 cm thick the bullet strikes the
a 50 -n crate is pulled up a 5 m inclined plane by a worker at constant velocity if the plane is inclined at angle of
as a crude model for lightning consider the ground to be oneplate of a parallel-plate capacitor and a cloud at an
a small hole is drilled in a meter stick is toact as a pivot the meter stick swings in a short arc as a physical
a skier starts from rest at the top of a hill the skier coastsdown the hill and up a second hill as the drawing
having trouble integrating hookes law and gravitational force with charge forces to calculate the distance in the
a wrecking ball swings at the end of a 114-m cable on a verticalcircular arc the crane operator manages to give the
a model rocket fired vertically from the ground ascends with aconstant vertical acceleration of 548 ms2for 105 s its
a woman on a bridge 970 m highsees a raft floating at a constant speed on the river below shedrops a stone from rest in