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suppose you want to determine the electric field in a certain region of space you have a small object of known charge
a 60 cm diameter horizontal pipe gradually narrows to 40cm when water flows through the pipe at a certain rate the
all of the electrical outlets in a room are connected in asingle parallel circuit the circuit is equipped with a 20-a
a mountain climber looks up a slope and sees an avalanche of boulders accelerating toward her the boulders are
a 300-k resistor and a 200-f capacitor are connected in series with an ac generator the emf of the generator is given
a rock climber stands on top of a 51 m high cliffoverhanging a pool of water he throws two stones verticallydownward 10
a toy rocket of mass 60 g achieves a velocity of 80 ms after30 s when fired straight up what average force does the
two cars suffer head-on collision with each other what is conserved in the collisiona mechanical energy amp momentumb
pulsars are neutron stars that emit x rays and other radiation insuch a way that we on earth receive pulses of
an electron is accelerated from rest to the point where its debrogile wavelength is 1 picometer how much energy was
a simple loop circuit contains an inductor with inductance 245times102 h and a capacitora if the current in the circuit
two point charges are placed on the x axis as follows chargeq1 -150 nc is located at x200m and a charge q2 500 nc is
a what must be the charge sign and magnitude of a 145 gparticle be for it to remain balanced against gravity when
a 5 mev photon collides with an electron that is at rest and imparts to it the maximum possible kinetic energya
a cylinder with a diameter of 23 cm rolls with an angular speedof 040 rads on a levelsurface if the cylinder
a stationary motion detector sends sound waves of frequency0135 mhz toward a truck approaching at a speed of 492 ms
an electron that has a horizontal initial speed of 450 106 ms enters a region that has anelectric field of 120 vm
a charge of q is located at the origin while an identical charge is located on the xaxis at x 047 m a thirdcharge of
an ocean fishing boat is drifting just above a school of tuna on afoggy day without warning an engine backfire occurs
earths radius is 6384 km how many rotations per day would earth have to spin such that a person standing on the equator
in a 300 s interval 470 hailstonesstrike a glass window of area 0600 m2 at an angle of450deg to the window surface each
a 30-kg coconut falls from a coconut tree a distance of 30 meters if the average force the sand provides once the
the star betelguese has a radiusnbsp and surface temperature of about 108 miles and 3000k the sun has a radiusnbsp and
the diameter of the moons nearly circular orbit about the earth is 36x105 km an dit takes 27 days for one orbitnbsp
a bolt comes loose from the bottom of an elevator thatis moving upward at a speed of 542 ms the boltreaches the bottom