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1 as used in the laws of refraction and reflection the normal direction isa tangent to the interfaceb along the
normal 0 false false false en-in x-none x-none microsoftinternetexplorer4
light is reflected from a transparent coffee table when angle of incidence is 522deg the reflected light is completely
how much power should you exert to horizontally drag a 300kg table 120m across a brick floor in 250s at constant
the intensity on the screen at a certain point in a double slit interference pattern is 640 of the maximum
a flat loop of wire consisting of a single turn of cross-sectional area 8cm2 is perpendicular to a magnetic field that
a coil has a dc resistance of 100 omega and an impedance of 180 omega at a frequency of 2 khz neglect the wiring
a box of mass m500 kilogram hangs by a rope from a beam with dimensions a20 meter and b30 meter the beam has mass m85
a bullet with mass m95 gram and initial velocity v630 ms is fired into a block mass m 54 kilogram that is hung by two
a spaceship is approaching the earth at a relative speed of 090c the mass of the ship is 300 x 107 kilogram evaluate
an unstable high-energy particle is created in the laboratory and it moves at a speed of 0962c relative to a stationary
an aluminum rod and a copper rod of same diameter are joined end to end in good thermal contact the temperature of the
water flows at the rate of 321 kgs through a hose with a diameter of 352 centimeter find the speed of water in this
a boy whirls a ball on a string in a horizontal circle of radius 08 meter such that the centripetal acceleration is
the light shining on a diffraction grating has a wavelength of 495 nm in vacuum the grating produces a second-order
during takeoff an air plane goes from 0 to 720 kmhr in 10 seconda determine its accelerationb calculate how fast is it
a 165 kg mass is placed on the end of a spring that has a spring constant of 195 nm the massndashspring system rests
if the torque needed to loosen a nut that is holding a flat tire in place on a car has a magnitude of 450 nbullm find
a small dog has thick fur with a thermal conductivity of 0040wm bull k the dogs metabolism produces heat at a rate of36
a uniform ladder 50 meter long rests against a frictionless vertical wall with its lower end 30 meter from the wall the
two people carry a heavy electric motor by placing it on a light board 400 meter long one person lifts at one end with
virtual images formed by a convex mirror are alwaysa on the side of the mirror opposite the sourceb on the similar side
a very powerful octopus uses one sucker of diameter 291 centimeter on each of the two shells of a clam in an attempt to
a very powerful vacuum cleaner has a hose 291 centimeter in diameter with no nozzle on the hose compute the weight of