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a spider hangs from a strand of silk whose radius is 190010-6 m the density of the silk is 1300kgm3 when the spider
a solid sphere of mass 10 kilogram and radius 0010 meter starts from rest and rolls without slipping down a 10 meter
a simple pendulum is made from a 076-m-long string and a small ball attached to its free end the ball is pulled to one
a 100-w incandescent light bulb has a cylindrical tungsten filament 250 cm long 0440 mm in diameter and by an
a wheel of moment of inertia of 500 kgbullm2 starts from rest and accelerates under a fix torque of 300 nbullm for 800
a meter stick lies at the bottom of a 100cm long tank by its zero mark against the left edge you look into a tank at 30
a rotating flywheel can be used to store energy if it is required to store 100 x 106 joule of energy when rotating at
a boy wishes to row across a river in the shortest possible time he can row at 2 ms in still water and the river is
unpolarized light of intensity i0 is incident on the following arrangements of polarizing sheets the first polarizer is
at timenbspt 0 a grinding wheel has an angular velocity of 230nbsprads it has a constant angular acceleration of
a narrow slit 0072 mm wide is illuminated with monochromatic light and a diffraction pattern is observed on a screen 40
an electron has a speed of 06 ca discover the speed of a proton that has the same kinetic energy as the electronb
what are the advantages and disadvantages of constructive and deconstructive interferences give typical examples of
a 700 kilogram guy stands at one end of a 1000 kilogram raft that is 50 meter long the other end of the raft is 10
a 450 kilogram lady is standing on a 160 kilogram plank the plank originally at rest is free to slide on a frozen lake
a tuning fork with a frequency of 440 hz is held above a resonance tube that is partially full with water assuming that
a person with mass 700 kilogram jumps out of a window from a fire in his building into the firefighters net below the
a 020 kilogram ball is thrown straight up into the air with an initial speed of 13 ms determine the momentum of the
a railroad car of mass 23 x 104 kilogram moving at 300 ms collides and couples with two coupled railroad cars each of
a blue puck with mass 00400 kilogram sliding with a velocity of magnitude 0200 ms on a frictionless horizontal air
a 70 gram bullet is fired into a 15 kilogram ballistic pendulum the bullet emerges from the block with a speed of 200
a 500 kilogram kid stands at the rim of a merry-go-round of radius 240 meter rotating with an angular speed of 240
a sports car starts from rest on a circular track of radius 537 meter the cars speed increases at the constant rate of
brass is an alloy of copper and zinc does the addition of zinc to copper reason an increase or decrease in the speed of
the average speed of a nitrogen molecule in air is about 670 e2ms and its mass is about 468e-26 kilograma if it takes