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problem 1two infinite lines of charge with equal linear charge densitiesl cm are placed along the x and yaxis derive an
in the 1930rsquos acoustic detection systems able to detect anaircraft at a range of 400 km were developed in several
a ditch d 180 m wide crosses a trailbike path an upward incline of 14deg has beenbuilt up on the approach so that
an astronaut on the moon fires a projectile from a launcher ona level surface so as to get the maximum range if the
a beam of hydrogen molecules h2 is directed toward awall at an angle of 50deg with thenormal to the wall each molecule
a calculate the speed of sound in air at a temperature of 120degrees c given that the speed of sound in air at a
this is the question an atomic nucleus at rest decaysradioactively into an alpha particle and a smaller nucleus what
a water-skier is moving at a speed of 143 ms when she skis inthe same direction as a traveling wave she springs upward
a violin is tuned by adjusting the tension in the strings onbrianrsquos violin the ldquoardquo string is tuned to
sound is generated from standing waves in two tubes which are both open at both ends and are identical apart from one
a satellite mass of satellite5850kg is in circular orbit of 41x105m above the surface of aplanet which has a radius of
a solid cylinder of radius 35m is released from rest from aheight of 18m and rolls down an incline without slipping as
a 75 kg man weighs 735 n on the earths surface how far above the surface of the earth would he have to go to lose12 of
two identical batteries of emf epsilon 507 v and internalresistance r 0208 omega are to be connectedto an external
the blades of a fan running at low speed turn at 200 rpmwhen the fan is switched to high speed the rotation rate
some gliders are launched from the ground by means of a winch which rapidly reels in a towing cable attached to a
a car of mass 12 103 kgrounds a circular turn of radius 17 m if the road is flat andthe coefficient of static friction
a cup of coffee is sitttinf ona table in an airplane that isflaying at a constant velocity and altidude the
a ball is tossed from an upper-story window ofa building the ball is given an initial velocity of 810ms at an angle of
imagine that you swing about your head a ball attached to theend of a string the ball moves at a constant speed in a
a charged belt 43 cm wide travels at 26 ms between a source of charge and a sphere the belt carries charge into the
a fuse in an electric circuit is a wire that is designed to meltand thereby open the circuit if the current exceeds
a wire with a resistance of 71 omega is drawn out through a die so that its new length is 5 times its original length
1 what would be the accelaration due togravity on earth if the earths mass trippled and the radius wasdoubled2 a 250
a person on earth notices a rocket approaching from the rightat a speed of 075c and another rocket approaching from the