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lawn spheres placed on a pedestals are convex mirrors onesphere has the diameter of 37 cm a bird whose height is 129
two conducting rails 30cm apart rest on a 50degreeramp they are joined at the bottom by a 060 ohm resistorand at the
a laser emits light at power 850mw and wavelength 633 nm the laser beam is focused narroweduntil its diameter matches
an asteroid whose mass is 15 x 10-4 times the mass of earth revolves in a circularorbit around the sun at a distance
a thin rod length is 150 m is oriented vertically with itsbottom end attactched to the floor by means of a
a driver travels northbound on a highway at a speed of 250ms a police car travelling southbound at a speed of 400
a simple 200 m long pendulum oscillates in a location where g 980 ms2 what is the period of motion for this
a diffraction pattern forms when light passes through a singleslit the wavelength of the light is 680 nm determine the
a centrifuge in a medical laboratory rotates at an angularspeed of 3450 revmin when switchedoff it rotates through
a train travelling at 500 kmh approaches another train moving toward the first at 900 kmh if they are 35 km apart on a
a roller coaster at an amusement part starts out an a level track 500 m long and then goes up a 250 m incline at an
a sailor strikes the side of his ship just below the surfaceof the sea he hears the echo of the wave reflected from the
a boat that travels at the speed of 675 ms in still water is to go directly across a river and back the current flows
a flashlight on the bottom of a 360 m deep swimming pool sends a ray upward and at an angle so that the ray strikes the
the maximum electric field 83 m from a point light source is23 vm what area themaximum value of the magnetic field andb
a circular loop with a radius of 200m is placed in a uniformmagnectic field of magnitude 0850t the normal to the loop
a constant horizental force of 12 n is applied to a uniformsolid cylinder by fishing line wrapped around the cylinder
a proton travels through uniform magnetic and electric fieldsthe magnetic field is b -250i mt at one instant the
a toroid having a square cross section 300 cm on a side and an inner radius of110 cm has 500 turns and carries a
three blocks are in contact with each other on a frictionlesshorizontal surface a horizontal force f is applied tom1 m1
a diver of mass 70kg jumps off a board 10m above the water if his downward motion is stopped 2 secs after he enters the
a television station broadcast on a frequency of 89 mhz whatis the wavelength of the electromagnetic wavem what is the
2 asteroids are traveling close to each other through thesolar system at a distance of 20x10 to the positive 10 rom
an audio amplifier represented by the ac source and theresistor r delivers alternating voltages at audio frequencies
if the humidity in a room of volume 685 m3 at 25degc is 40percent what mass of water can still evaporate from an