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a laser beam is directed from air n 10 into an unknown liquid the angle of incidence is measured to be 60deg and the
two identical conducting spheres fixed in place attract each other with a force of 0083 n when their center to center
a teeter-totter is made of a 5400 m long plank with a mass of 580 kg with a fulcrum pivot point located 2900 m from the
a particle of charge of 350 10-6 c is 120 cm distant from a second particle of charge of -210 10-6 c calculate the
a bullet of mass 240 g is fired horizontally from a gun with a velocity of 800 ms into a wooden block of mass 50 kg
an expansion process on a diatomic ideal gas has a linear path between the initial and final coordinates on a pv
the common isotope of uranium 238u has a half life of 450 x 109 years decaying by alpha emission a what is the decay
a 0650 mev x-ray is compton scattered at 90deg by a free electron in an aluminum foil a what is the wavelength of the
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
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