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a closed gas system initially has volume and temperature of 4360ml and 6460c with the pressure unknown if the same
a gas system has an initial volume of 544l with the number of moles unknown when the volume changes to 3980ml under
under some circumstances a star can collapse into an extremely dense object made mostly of neutrons and called a
take element z 69 from the periodic table ionize it 68 times so that there is only one electron left orbiting around
what is the magnification of an astronomical telescope whose objective lens has a focal length of 74 cm and whose
a solid object of density 660 kgm3 is placed in watera will the object float whyb what will be the buoyant force on the
a uniform rod rotates in a horizontal plane about a vertical axis through one end the rod is 1300 m long weighs 2167 n
a firehose 15 m long is uncoiled by pulling the nozzle end horizontally along a frictionless surface at the steady
a computer to be used in a satellite must be able to withstand accelerations of up to 27 times the acceleration due to
a 32 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling the elastic
if a wave vibrates back and forth six times each second and its wavelength is 7 meters what is its frequency period and
a block of wood floats in fresh water with two-thirds of its volume v submerged it floats in another liquid with 0620 v
a person weighs 691 n in air but only 499 n when standing in water up to the hips find the volume of each of the
a mountain climber stands at the top of a 528m cliff hanging over a calm pool of wat the climber throws two stones
in a compton scattering experiment an x-ray photon scatters through an angle of 170deg from a free electron that is
two objects with masses 530 and 250 hang 0800 above the floor from the ends of a cord 800 long passing over a
you height of your eyes above the water 175 rm m are standing 200 rm m from the edge of a 250-rm m-deep swimming pool
1 at point a 300 m from a small source of sond that is emitting uniformly in all directions the sound level is 530 dba
a spherical mass on a rod of length l rotates rigidly about a fixed axis at the opposite end of the rod at time t0000s
sample of an ideal gas is taken through the cyclic process abca at point a t 385 k how many moles of gas are in the
a rotating door is made from four rectangular glass panes as shown in the drawing the mass of each pane is 79 kg a
the moon is 3476 km in diameter and orbits the earth at an average distance of 384400 kmwhat is the angular size in
if you were to build a pipe organ with open-tube pipes spanning the range of human hearing 20 hz to 20 khz what would
the intensity of sunlight at the distance of the earths orbit is 1380 wm2 an earth-orbiting satellite has a solar panel
a photon of red light wavelength 710 nm and a ping-pong ball mass 220 x 10-3 kg have the same momentum at what speed