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two insulated wires each 290 m longare taped together to form a two-wire unit that is 290 m long one wire carries a
the depth of the potential well for free electron in a metal can be determined by noting that the photoelectric work
a thin rod length 137 m is oriented vertically with itsbottom end attached to the floor by means of a frictionless
a proton resistor spring system in a magnetic field going out of the page has a mass of proton 16710-27 kg a spring
some bacteria are propelled by motors that spin hair-like flagella a typical bacterial motor turning at a constant
after a fall a 86 kg rock climber finds himself dangling from the end of a rope that had been 15 m long and 92 mm in
vertically polarized light with intensity io is normally incident on an ideal polarizer as the polarizer is rotated the
a meter stick balances horizontally on a knife-edge at the 500 cm mark with two 2 g coins stacked over the 115 cm mark
light from a location on which you concentrate your attention fallson your fovea which contains only cones if you wish
a mirror with a focal length of -10 cm is used to image an object15 cm away what is the image distance and what type
a 420-kg boy riding a 229-kg skateboard at a velocity of 582 ms across alevel sidewalk jumps forward to leap over a
some bacteria are propelled by biologicalmotors that spin hair-like flagella a typical bacterial motorturning at a
an electric oscillator ismade with a 015 micro f capacitor and a 20 mh inductor the capacitor is initially charged up
the figure shows a lower leg being exercised it has a 49-nweight attached to the foot and is extended at an angle with
a coil of wire that is 30cm in diameter has 1500 turns is in a magnetic field that goes from0 t to 05 t in 5 ms the
a rotating object starts from rest at t 0 s and has aconstant angular acceleration at a time of t 70 s the object has
a transformer has an input coilwith nin 250 turnsand nout 900 turns if the voltage across the inputcoil has an
1 in converting electrical energy into light energy asixty-watt incandescent light bulb operates at about 22 efficiency
lens l1 has a focal length of 15o cm and is located afixed distance in front of the film plane of a camera lens l2 has
the wire in the drawing carries a current of 10 a suppose thata second long straight wire is placed right next to this
a lighted candle is placed 35 cm in front of a diverging lens the light passes through the diverging lens and on to a
in a location where the speed of sound is 337 ms a 2000 hz sound wave impinges on two slits 30cm aparta at what angle
light of wavelength 500102 nm illuminates a pair of slitsseparated by 0280 mm if a screen isplaced 210 m from the slits
consider a current carrying loop of wire an electron is shotdirectly through loops center perpendicular to the plane of