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two passenger trains a and b each 240 mlong pass a 40 m long railroad platform in winnepeg the trains are moving in
the current through two identical light bulbs connected in series is 025 amps the voltage across both bulbs is 100
a ray of light enter a light fiver at an angle of 15 degreeswith the long axis of fiver calculate the distance the
a droplet of ink in an industrial ink-jet printer carries acharge of 16x10-11 coulombs and is deflected ontopaper by a
consider a pair of forces one having a magnitude of 30 n andthe other having a magnitude of 40 n what maximum net
a tungsten light bulb filament has a surface area of 2610-5 m2 and is maintained at a temperature of25103 oc calculate
two small spheres spaced 200 centimeters apart have equal chargenbsp how many excess electrons must be present on each
in an electron diffraction experiment consider a screen with asingle vertical slit of finite width d in the
an electron with speed v0 17 multiplied by 106 ms is traveling parallel toan electric field of magnitude e 70
a 700-kg block of ice released fromrest at the top of a 175-m-longfrictionless ramp slides downhill reaching a speed
brass is an alloy of copper and zinc does the addition of zincto copper cause an increase or decrease in the speed of
particles approximately 30 x 10-2 cm in diameter are tobe scrubbed loose from machine parts in an aqueous
two hydrogen atoms travelling at the same speed collide headon the collision brings both atoms to a halt
a copper cylinder 150m long and 400cm in diameter stands onone enda what is the mass of the cylinderb what force does
a pendulum is not perfect simple harmonic motion derive theequation for the period of a pendulum from the equation for
two bullets have masses of 29 gand 42 g respectively each is fired with a speed of 420msa what is the kinetic energy
a cube of ice whose edges measure 210mm is floating in a glass of ice-cold water with one of its facesparallel to the
through a pipe 170 cm in diameterwater is pumped from the colorado river up to grand canyon villagelocated on the rim
a diver can change his rotational inertia by drawing his arms andlegs close to his body in the tuck position after he
figure skater is spinning at a rate of 10 revs with her armsoutstretched she then draws her arms in to her
in the movie terminator arnold schwarzenegger lifts someone up bythe neck and with both arms fully extended and
a ferris wheel rotates because a motor exerts a torque on thewheel the radius of the london eye is 675 m and its mass
which one of the following situations results in the largestmagnitude torque acting on a rigid objecta a force of
a bicycle has wheels of radius 032 m each wheel has a rotationalinertia of 0080 kgm2 about its axle the total mass of
the radius of a typicalhuman eardrum is about 40 mm find the energy persecond received by an eardrum when it listens to