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a coil has 460 turns andself-inductance 345 mh the currentin the coil varies with time according to i 680ma
one solenoid is centered inside another the outer one has alength of 500 cm and contains 6700 coils while the coaxial
the figure below shows an overhead view of a corridor with aplane mirror m mounted at one end a burglar bsneaks along
consider an ac voltage source that produces a voltage given byv vmaxsin2pift with vmax 19 v and f 61 hz what is the
a 169 kg mass stretches a vertical spring0317 m if the spring is stretched anadditional 0135 m and released how
two parallel slits are illuminated by light composed of two wavelengths on of which is 645 nmnbsp on a viewing screen
a 400-kg boy riding a 250-kg skateboard at a velocity of 530ms across a level sidewalk jumps forward to leap over a
two long straight conducting wires are parallel with thez-axis the first wire a passes through the point y 30 m onthe
an object is placed 14 cm to the left of a two lens combinationthe left hand lens has a focal length of 12 cm the right
a ball of mass m 21 kg moving with a speed of v0 152 msstrikes an identical ball which was initially at rest after
is it possible for the efficiency of some device or machine to be greater than 1 either give and example where
a 45 kg figure skater is spinning on the toes of her skates at10 revs her arms are outstretched as far as they willgo
water flows over victoria falls which is 128 m high at an average rate of 120 times 106 kgs if two thirds the potential
to focus a camera on objects at different distances the converginglens is moved toward or away from the image sensor so
the two loudspeakers in the drawing are producing identical soundwaves the waves spread out and overlap at thepoint p
1 a an electron and a proton are eachaccelerated from rest in a uniform electric field of 20 times105 vm what are their
are the following statements true or false1 two balls one larger than theother roll without slipping across a
a wheel of mass 124kg and radius 044 i 05mr2 starts from rest and rolls without slipping for a distance of 17m down a
the electromagnetic wave that delivers a cellular phone call to acar has a magnetic field with an rms value of 138e-10
the average intensity of sunlight reaching the earth is 1390 wm2 a charge of 238 x10minus8 c is placed in the path of
an ac circuit contains a 100 omegaresistor a 630 microf capacitor and a370 mh inductor connected in series to anac
a speeder is pulling directly away and increasing his distance from a police car that is moving at 251ms with respect
a parallel plate capacitor has two plates each of area30x10-4 m2 separatedby 35x10-4 m the space betweenthe plates is
a square wire loop with 187 m sides is perpendicular to a uniformmagnetic field with half the area of the loop in the
the optical power ofan optical device of focal length f is 1fthe unit of which is 1m or mndash1 ordiopter an image is