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a 30micro coloumb point charge is placed at the origin and a 12micro coloumb is places at the point 20m0 2m to the
a an electron in a television tube travels the 22 cm distance from the grid to the screen at an average speed of 700
if the work required to move a 025 c charge from point a to point b is 175 j what is the potential difference between
determine the length of a copper wire that has a resistance of 0172 ohms and cross-sectional area of 785 times 10-5 m2
a pendulum clock is accurate on earth where the period of its pendulum is 100 sa find its period on the moon where
a 150 kg mass attached to a spring oscillates with a period of 0365 s and an amplitude of 155 cma find the total
two bodies oscillate in shm with the same amplitude 790 cm and frequency but out of phase so that body a always has a
an electron is released to accelerate from point 1 to point 2 in a potential region the electric potentials at these
the record for the highest speed achieved in a laboratory for a uniformly rotating object was 201e3ms for a 015m long
a rod length 3 meters mass 1 kg is pinned at its end so the stick can rotate freely in a plane parallel to a tabletop a
one end of a 30 cm long aluminum rod with diameter 2 cm is kept at 460c while the other end is held in water at 25c
when people exercise they shed heat to the environment by sweating and radiating suppose neither of these worksof a
four rays of light are incident on a surface of water their angles of incidence are 20 30 45 y 60 degrees calculate the
an object is placed to the left of a convex lens and on the optical axis the object is 38 cm from the lens and the
you have 31m of wire which you want to use to construct a 45cm diameter coil whose magnetic field at its center will
a helium gas cylinder has a pressure of 28 atm after filling many balloons the cylinder has a pressure of 5 atm what
an object is in front of a converging lens f 0370 m the magnification of the lens is m 360a relative to the lens in
two converging lenses are separated by 2360 cm the focal length of each lens is 1100 cm an object is placed 3620 cm to
the pfund series results from emissionabsorption of photons due to transitions of electrons in a hydrogen tofrom the n
a jet flying faster than the speed of sound creates a shock cone of high pressure air the angle of the shock cone
fat man the atomic bomb dropped on nagasaki at the end of world war ii released approximately 88 x 1012 j of explosive
the coil wand pendulum starts swinging with an angle of 30 degrees with the vertical after it passes through the
a person sees a distant lightning strike then 45 seconds later he hears the thunder clap if it is 35 degrees celsius
a whale sends an undersea signal to its mate and then gets a response 45 seconds later how far away is the whales
a person is watching water waves at the ocean and they notice the peak to peak distance between the waves is 34 m they