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a concrete slab is 109 cm thick and has an area of 51 m2 electric heating coils are installed under the slab to melt
a glass window pane in a home is 062 cm thick and has dimensions of10 m 19 m on a certain day the outdoor temperature
when a banjo string is under a tension of 200n it is tuned to a frequency of 523 hz find the frequency if the tension
a helium-neon laser lambda6328 nm illuminates a diffraction grating the distance between the two m1 bright fringes is
a beam of light is incident from air on the ground of a liquid the angle of incidence is 30deg and the angle of
light in air is incident at the polarizing angle on a certain piece of glass the angle of refraction is 32deg evaluate
a converging lens of focal length 40 cm and a diverging lens of focal length 40 cm are 160 cm apart a 2 cm tall object
a concave mirror forms an inverted image 4 times larger than the object evaluate the focal length of the mirror if the
a student studying the photoelectric effect from 2 different metals records the following informationi the stopping
a gas is enclosed in a container fitted with a piston of cross sectional area 0150 m2 the pressure of the gas is
in a hot star as of the high temperature an atom can absorb sufficient energy to remove several electrons from the atom
a woman finds the front windshield of her car covered with ice at -114 degc the ice has a thickness of 199 x 10-4m and
water flowing out of a horizontal pipe emerges through a nozzle the radius of the pipe is 18 cm and the radius of the
a carnival clown rides a motorcycle down a ramp and around a loopthe loop if the loop has a radius of 18m what is the
the density of seawater is 1025 kgm3 and and density of ice is 917 kgm3 a swimming polar bear climbs onto a piece of
two kids hang by their hands from the same tree branch the branch is straight and grows out from the tree trunk at an
a circular loop of radius 20 cm isplaced in an external magnetic field of strength 010 t so that the plane of the loop
a person is riding a bike the wheels of a bike have an angular velocity of 185 rads then the brakes are applied
a large person sits on a four-legged chair with his feet off the floor the combined mass of the person and chair is 950
a 110 kg mass is attached to a light cord that is wrapped around a pulley of radius 730 cm which turns with negligible
an archeologist on a dig finds a fragment of an ancient basket woven from grass later it is evaluated that the
the coefficient of static friction between a rope and the table onwhich it rests is mu rmsfind the fraction of the rope
a component with 19 omega resistor is rated for use at power levels not exceeding 11 w find how much current safely
a sample of an unknown material appears to weigh 260 n in air and 200 n when immersed in alcohol of specific gravity
a plastic sphere floats in water with 350 percent of its volume submerged this same sphere floats in an unknown fluid