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in a simple model of the hydrogen atom theelectron revolves in a circular orbit around the proton with aspeed of 11 x
capacitors c1 50 microf and c2 20microf are charged as a parallel combination across a250 v battery the capacitors
an isolated capacitor of unknown capacitance has been chargedto a potential difference of 100 v when the charged
a person lying on an air mattress in the ocean rises and falls through one complete cycle every 5 seconds the creast of
a mass m is connected to the bottom of a vertical springwhose force constant is k attached to the bottom of themass is
a bungee jumper falls for 13 s before the bungee cord beginsto stretch until the jumper has bounced back up to this
a 755 n diver drops fromw a board 100 m aabove watersserface find the divers speed 500m above the waters serfface then
two capacitorsc1 30 microf andc2 30 microfare connected in parallel and charged with a 100 v power supplya calculate
a series combination of a 11 k resistor and an unknown capacitor is connected toa 11 v battery one secondafter the
a 108 g piece ofstyrofoam carries a net charge of -0700 microc and floats abovethe center of a large horizontal sheet
find the pressure increase in the fliuid in a syringe when anurse applies a force of 42n to the syringes circular
an electric dipole consists of charges 2e and-2e separated by 060 nm it is in an electric fieldof strength 45 x 106 nc
beams of high-speed protons can be produced in guns usingelectric fields to accelerate theprotons a what acceleration
a rock is dropped off the side of a bridge and hits the waterbelow 2s latera what was the rocks velocity when it hit
estimate the volume of water in the worlds oceans in cu km assuming a mean depth of water of 4 km how deep would the
a 12v battery is conected to an electricstarter motor the current through the motor is 223ahow much energy does the
an alpha particle helium nucleus charge 2e starts fromrest and travels a distance of 30 cmunder the influence of a
the coefficient of static friction between the tires of amotorcycle and the road is 056 at a speed of 19 ms what is
the click beetle accelerates at 400 g over a distance of 060 cm as it bends its thorax to clicka assuming the beetle
a spacecraft that is initially at rest turns its engine at t0 ifits mass is m3000kg and the force from the engine is
a 150g copper bowl contains 220 g of water both at 200degrees c a very hot 300g copper cylinder is dropped intothe
a turntable is switched from 471 rads 45rpm to 349 rads3313 and the platter rotates through an angle of 115 rad
an amusement ride consists of a car moving in a vertical circleon the end of a rigid boom the radius of the circle is
two point charges 370 microcand -610 microc are separated by 160 m what is the electric potential midway between
an object initially at rest experiences an acceleration of17ms2 for 70s and then travels at that constantvelocity for