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a computer draws an rms current of 270 aat an rms voltage of 120 v the average power consumption is279 wa what is the
a pulley rotating in the counterclockwise direction is attached toa mass suspended from a string the mass causes the
a steel section of the alaskan pipeline had a length of 65 m and atemperature of 22degc when it was installed what is
jamal pulls a 150-n sled up a 280 degrees slope at constantspeed by a force of 100 n near the top of the hill he
an electron moving from the negative terminal to the positiveterminal of a 12 volt battery gainsor loses how much
a simple pendulum has a mass of 0250kg and a length of 400 m it is displacedthrough an angle of 110deg and then
a block of unknown mass is attached to a spring with aspring constant of 500 nm and undergoessimple harmonic motion
a 70 m3 incompressible box is completely submerged in a fluid what volume of fluid is displacedby the box if the fluid
two blocks m1120kg and m2100kg 1m above the ground both blocks are connected by a mass less pulleya find how long does
a 40 kg girl sits on a turn table with a moment of inertia of 1200the turn table completes 1 revolution in six seconds
the 4 tires of a car are inflated to a gauge pressure of 23 105 pa each and every tire has an area of 0021 m2 in
a jet flying at 137 ms banks to make a horizontal circularturn the mass of the jet is229 times 105 kg and radius of the
a satellite has a mass of 6358 kg and is in a circular orbit 489times 105 m above the surface of a planet the radius of
in a large centrifuge used for training pilots and astronauts asmall chamber is fixed at the end of a rigid arm that
a 650 kg elevator starts from rest it moves upward for 350 s with stable acceleration until it reaches its cruising
a solid steel ball and a tennis ball the same size are dropped at the same time find which ball has the greater force
archaeologists have unearthed a primitive stringed instrument at the ancient sumerian city of lude the ludicrous harp
an opening of area 0264 cm2 in an otherwise closed beverage keg is 484 cm below the level of the liquid of density105
each of the electrons in the beam of a televisiontube has a kinetic energy of 150 kev the tube is oriented so thatthe
two jets of material from the center of a radio galaxy fly away in opposite directions both jets move at 0676 c
a wagon is rolling forward on level ground friction is negligible the person sitting in the wagon is holding arock the
suppose a recently found elementary particle has an average life time t 106 ns when at rest for instance a charged
when t 0 the position of a particle is 6 m and its velocity is 2 ms from t 0 to t 6 s the acceleration of the
in the ideal atwood aparatus in which m1 20 kg sits on a 20 degree incline plane what is m2 if both masses are at
a person walks 25 m west and then 45m at an angle of 60 degrees north of east estimate the magnitude of the