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how does the magnitude of electrical force between a pair of charged objects changed when the objects are moved twice
an empty parallel plate capacitor is connected between the terminals of a 70 v battery andcharged up the capacitor is
a metal rod is forced to move with constant velocityv along two parallel metal rails connected with a stripof metal at
what is the minimum initial speed of the dart if it is to hit a monkey before it hits the ground which is 112 m below
a small block with a mass 120 kg is attached to a cordpassing through a hole in a frictionless horizontal surfacefig625
imagine that the force of gravity has been turned off and we wish to keep the moon in its current orbit around the
you produce an image of the sun on a screen using a thin lenswhose focal length is 200 cm what is the diameter of the
a guy looks into one side of a hubcap he sees an inmageof his face 300 cm in back of it he then turns the hubcapover
suppose that a planet were discoveredbetween the sun and mercury with a circular orbit of radius equalto frac23 of the
an electron with kinetic energy 220 kev circles in a plane perpendicular to auniform magnetic field the orbit radius is
a stream is 300 m wide and 500 m deep water flows at120 ms over the bring of the waterfall 500 m high if 25of the
a hydrogen atom is in its fifth excited state with principalquantum number 6 the atom emits a photon with a wavelength
an electron enters a region of a uniform electric field e 50 nc with an initial velocity of 40kms directed the same as
the earths distance from the sun varies from 1465 xnbsp 108 kmto 1518 xnbsp 108 kmduring the year take the sun to be at
a meteor has a speed of 770 mswhen 700 km above the earth it isfalling vertically ignore air resistance and strikes a
a boat with a horizontal tow rope pulls a water skier she skis off to side so the rope makes an angle of 150 degrees
suppose the strings on a violin are stretched with the same tension and each has the same length between its two fixed
a charge of 47 uc is located at 0 22 m a charge of -63 uc islocated at 0 16m for these questions assume that the
a black body at 7500k consists of an opening of diameter00500mm looking into an oven find the number of photons per
a liquid flows through a horizontal pipewhose inner radius is 252 cm the pipe bends upward througha height of 115 m
a 35 microfarad capacitor is in series with a 250 ohm resistor and10v battery initally a switch in the circuit is open
your boss at the cut-rate cuckoo clock company asks you whatwould happen to the frequency of the angular shm of the
a ball is thrown upward in the air by a passengeron a train that is moving with constant velocitya describe the path of
a 70kg person running at an initial speed of 4ms jumps onto a120kg cart initially at rest the person slides on the
the turntable of a record player rotates initially at 33revmin and takes 20 s to come to resta convertt the initial