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fourteen moles of an ideal monatomic gas expand isothermally at a temperature of 75degc if the volume of the gas
the pitch of the sound from a race car engine drops the musical interval of a tenth when it passes the spectators this
stan and ollie are standing next to a train track stan puts his ear to the steel track to hear the train coming he
the longest string a thick metal wire on a particular piano is 30 m long and has a tension of 3000 n it vibrates with a
water flows from a fire truck through a hose that is 117 cm in diameter and has a nozzle that is 2 cm in diameter the
you pull downward with a force of 241 n on a rope that passes over a disk-shaped pulley of mass 135 kg and radius 00785
a projectile is fired horizontally from a gun that is 520 m above flat ground the muzzle velocity is 215 ms how long
you need to know the height of a tower but darkness obscures the ceiling you note that a pendulum extending from the
a solenoid with a cross-sectional area of 188times10-3 m2 is 0760m long and has 445 turns per meter find the magnitude
a stationary railroad whistle is sounded an echo is heard 50 seconds later by the trains engineer if the speed of sound
an iron casting containing a number of cavities weighs 169677 n in air and 130458 n in water what is the total volume
it is possible to make a thermometer by sealing gas in a rigid container and measuring the absolute pressure such a
on average each person in the industrialized world is responsible for the emission of 10000 kg of carbon dioxide every
a sinusoidal electromagnetic wave emitted by a cellular phone has a wavelength of 354 cm and electric field amplitude
an electromagnetic wave with frequency 650 hz travels in an insulating magnetic material that has dielectric constant
the sound level measured 52 m away from a jet engine is 140 dba what is the intensity of the sound at 52 mb what is the
a wooden cube of side 030 m has density of 700 kgm3 and floats partially submerged in seawaterdensity 1025 kgm3a what
a tennis ball of mass 561 10-2 kg initially moving at a speed of 315 ms hits a wall and rebounds with a speed of 180 ms
a tungsten target is struck by electrons that have been accelerated from rest through a 678-kv potential difference
a ray of light is traveling in a glass cube that is totally immersed in water you find that if the ray is incident on
a light beam travels at 194times108 in quartz the wavelength of the light in quartz is 355 part a what is the index of
you are driving along a highway at 25 ms when you hear the siren of an emergency vehicle traveling in the opposite
in a calorimetry experiment an unknown amount of steam at 100 c is added to 15 kg of ice at 0c in a well insulated and
a stainless steel flask with volume 10 liters is filled with 14 moles of helium gas at 27 ca what is the pressure of
an 800 kg car moving at 6 ms begins to coast down a hill 40m high with its engine off the driver applies the brakes so