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two hydrogen atoms collide head on the collision brings both atoms to a halt immediately after the collision both atoms
ultraviolet light with a wavelength of 100 nm shines on a gas of hydrogen atoms in their ground states some of the
a 400 liter gas tank is filled to the brim with gasoline when the temperature is 500degc gasoline has a coefficient of
one vessel contains a mixture of 5 parts pure wine and 3 parts soda whereas the other vessel contains a mixture of 9
two litres of mixture in which there is 25 of water and the rest spirit is mixed with five litres of mixture in which
a ball is dropped from height of 20 m above the surface of water in a lake the refractive index of water is 4 3 a fish
unpolarized light with intensity i0 is sentrst through a polarizer with the polarizing axis aligned in the vertical
two block of mass m 30 kg and m 10 kg slide without friction down the sides of a hemispherical bowl they each start
a laser beam is directed from air n 10 into an unknown liquid the angle of incidence is measured to be 60deg and the
the equation f arv br2v2 gives the magnitude of the resistive force in newtons exerted on a sphere of radius r in
a variable force given by the analytical expression f 3x2 with x in meters acts on an object changing only the kinetic
acceleration is sometimes expressed as multiples of g the acceleration due to earthrsquos gravity in a car crash the
a coil with 50 turns radius 15cm with a total resistance of 4 ohms is placed in a uniform magnetic field directed
an airplane traveling at half the speed of sound emits a sound of frequency 531 khz a at what frequency does a
an electron moving in the positive x direction experiences a magnetic force in the positive z direction if bx0 then
a long circular pipe with outside radius r 300 cm carries a uniformly distributed current i 138 ma into the page a
a person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 262 db
there is evidence that elephants communicate via infrasound generating rumbling vocalizations as low as 14 hz that can
a 101-kg horizontal platform is a uniform disk of radius 197 m and can rotate about the vertical axis through its
a turntable has moment of inertia 00300 kg m2 and is rotating at 250 revmin a 0300 kg ball of clay is dropped
a childs top is held in place upright on a frictionless surface the axle has a radius of r 396 mm two strings are
a solid brass bulk modulus 67 x 1010 nm2 sphere is subjected to a pressure of 10 x 105 pa due to the earths atmosphere
two blocks of mass m are suspended vertically as shown one block by a spring the other block to the first by a string
a small object oscillates back and forth at the bottom of a frictionless hemipherical bowl the radius of the bowl is r
a spring is compressed by 00541 m and is used to launch an object horizontally with a speed of 280 ms if the object