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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
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