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one liter of oxygen combines with 1 l of hydrogen to form 1 l of hydrogen peroxide given that the molecules of hydrogen
an athlete does the 100 m dash if observers on a spaceship moving with a speed of 0741c relative to earth see the
the distance to the moon can be found with the help of mirrors left on the moon by astronauts a pulse of light is sent
at 25degc the vapour pressure of pure pentane is 511 torr and that of hexane is 150 torrwhat is the mole fraction of
a circular coil having 19 turns and a radius of r 192cm carries a current of 330a it is placed in a uniform magnetic
an ideal monotonic gas is compressed at a constant pressure of 09 atm from 14 l to 35 l note atmospheric pressure is
two identical gliders on an air track are held together by a piece of string compressing a spring between the gliders
a copper rod of cross-sectional area 112 cm2 has one end immersed in boiling water and the other in an ice-water
a cepheid variable in a nearby galaxy looks 106 times fainter than an identical cepheid in the milky way the cepheid in
a spy satellite circles the earth at an altitude of 160 km and carries out surveillance with a special high-resolution
an elderly sailor is shipwrecked on a desert island but manages to save his eyeglasses the lens for one eye has a power
a glass plate n 161 is covered with a thin uniform layer of oil n116 a light beam of variable wavelength is normally
an x-ray photon with a wavelength of 0240 nm scatters from a free electron at rest the scattered photon moves at an
a box weighing 215 n is placed on an incline plane that makes an angle of 350 with the horizontalcompute the component
a wheel rotates through an angle of 138rad as it slows down from 220 rads to 135 rads what is the magnitude of the
an intergalactic rock star bangs his drum every 150 s a person on earth measures that the time between beats is 230 s
a light board 10m long has two supports one at one edge of the board and a second at the mid point a 40n weight is
a loop of diameter d 10 cm carrying a current i 02 a is placed inside a magnetic field b 03 t k hat the normal to
white light reflected at perpendicular incidence from a uniform soap film has an interference maximum at 600 nm and a
light from an argon laser strikes a diffraction grating that has 5306 lines per centimeter the central and first-order
a two narrow slits 0204 mm apart are illuminated by light of wavelength 580 nm the light falls on a screen 148 m away
at their closest approach venus amp earth are 420 x 1010m apart the mass of venus is 487 x 1024 kg the mass of earth is
a ball rolls down a board which is 20 degrees to the horizontal this time there is a coefficient of kinetic friction of
some asteroid named briggie has been discovered revolving around the sun on a circular orbit with a period of 390 years
light from a helium-neon laser 630nm is incident on a diffraction grating and then illuminates a screen that is 10 m