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one gram of water changes from liquid to solid at a constantpressure of 100 atm and a constant temperature of 0degc in
a freezer is used to freeze 10 lof water completely into ice the water and the freezer remain at aconstant temperature
a 722 kg car stopped at an intersection is rear-ended by a1620 kg truck moving w a speed of 145 ms the 2
a circular steel wire 200m long must stretch no more than025 cm when a tensile force of 400n is applied to each end of
a 500-hz sound travels through pure oxygen ythe wavelengthof the sound is measured to be 065 m what is the speed of
imagine bob lives on the earth at rest clara is traveling past theearth with a velocity of 9800 ms if a meteor moving
an intergalactic rock star bangs his drum every 150 s aperson on earth measures that the time between beats is 270s how
a trolley bus whose mass is 104 kg takes 10 s toreach a speed of 8 ms starting from rest it operates from a5 kv
suppose that a billiard ball approaches a rail at a speed of 15 ms and an angle od 60 degrees but rebounds at a speed
an aluminum rod is 160 cm longat 20degc and has a mass of 350 g if 13000 j of energy is added to the rod by heat what
the total cross-sectional area of the load-bearing calcifiedportion of the two forearm bones radius and ulna is
a student drops two metallic objects into a 120 g steel container holding 150 g of water at 25degc one object is a220 g
a sound wave with an intensity level of 810 db is incident on an eardrum of area0600 10-4 m2 how much energy is
when 215 g of a substance is heated to 330degrees celcius andthen plunged into a 100-g aluminum calorimeter cup
one of james bonds adversaries is standing on a frozen lakethere is no friction between his feet and the ice he throws
three moles of a monatomic ideal gas are heated at a constantvolume of 240 m3 theamount of heat added is 472 103 ja
the distance to a point source is increased by a factor of3a by what factor does the intensity decreaseb by what amount
one hundred turns of insulated copper wire are wrapped arounda wooden cylindrical core of cross-sectional area 805
the density of helium gas at t0 degrees celcius is 0179kgm3 temp is raised to 100 degrees celcius but pressure
an electron drops from the l shell to the k shell and givesoff an x-ray with a wavelength of 00200 nm what is the
a 67-kg skier is going down a 31 deg slope the area of eachski in contact with the snow is 019 m2 determine the
a bicyclist traveling with speed v 42 ms on a flat road ismaking a turn with a radius r 64m the forces acting on
air like all fluids exerts a buoyant force on objects thusan objects apparent weight in air is slightly less than its
a cat stands facing a converging lens with its tail in theair under what circumstances if any would the image of