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in loading a fish delivery truck a person pushes a block ofice up a 20 degree incline at a constant speed the push
an object is placed 30cm to the left of a lens with a focal length 25cm a second lens -22cm is placed 80 cm to the
two radio antennas are separated by 20 m both broadcast identical 750 mhz waves if you walk around the antennas in a
a pendulum 10 m long is pulled aside to the position wherethe 400 g bob has been raised verticall a distance of 10 cm
a person is standing on crutches assume that the forceexerted on each crutch by the ground is directed along the
the graph shows how the force component f cos along the displacement varies with the magnitude s of the displacement
suppose the three resistors in the circuit have the values of r1180 ohms r2300ohms and r3450 ohms and that the emf of
in a dream you find yourself pushing a huge boulder up a verysteep 35 degree hill that is 75 meters high the boulder
two is otropic point sources of light s1 ands2 are separated by a distance d 250mum along a yaxis and emit in phase at
two polarizers are oriented at 30o to each other and apolarized light is incident on them if only 14 percent of
raul pushes a stalled car with a force of 204 n if the requiredforce decreases at a constant rate from 204 n to 440 n
the closest star to our solar system is alpha centauri which is430 light years away a spaceship with a constant speed
a spaceship takes a nonstop journey to a planet and returns in 10hours according to a clock on the spaceship if the
how fast should a moving clock travel if it is to be observed by astationary observer as running at one-half its normal
an observer on earth sees an alien vessel approach at a speed of 6c a second spaceship comes to the rescue overtaking
a parallel-plate capacitor has a capacitance of 100pf a plate areaof 135cm2 and a mica dielectric kappa 54 completely
electricity may be generated by rotating a loop of wire between the poles of a magnet the induced current is greatest
a basketball of mass 0611 kg is droppedfrom rest from a height of 117 m it rebounds to a height of 0638m a how much
a uniform bridge 200 m long and weighing 400 x 105 n is supported by two pillars located 300 m from each end if a 196
a 1 kg meterstick is supported at its 4m mark by a stringattached to the ceiling a 7 kg mass hangs vertically from
how did marie and pierrecurie measure the radio activity of her pitchblende samples how did she deduce that there must
an athlete on a trampoline leaps straight up into the air with an initial speed of 90 ms find the speed of the athlete
a parallel-plate capacitor has a voltage v 60 v between its plates each plate carries a surface charge density sigma
two equal charges q are separated by a distance dnbsp one of the charges is released and moves away from the other due