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an engine based on the stirling cycle uses 22 kg of n as its working fluid 570 kj of heat enters at a temperature of
for a tellurium-132 sample 6566 counts were observed between 50 and 80 hours after the preparation of the source how
a 600 gram particle initially at rest at the origin is subjected to a force of f15i20j n which pushes the particle
if the work function of a metal is 439 ev what is the maximum wavelength of light that can be used to observe the
if car a is moving east at a speeed of 40mph realtive to the ground and car b is moving east at 30mph relative to the
the 2007 world record for the mens 100m dash was 977 seconds the third place runner crossed the finish line in 1007 s
taking 100 kg of the 20 feed solution as a basis draw and label a flowchart of this process labeling both masses and
molecular hydrogen can be made from methane gas by the reaction below how is the rate of disappearance of ch4 related
the rubidium isotope 87 rb is a emitter with a half life of 49 times 1010 y that decays into 87 sr it is used to
it takes 10 microliters to produce a spot 1cm in diameter if cono32contains 6 g co2 per liter how many micrograms of
consider a piece of an n-type semiconductor 15 cm long 07 cm wide and 15 mm hick if we apply a 035 v voltage across the
1000 gallons per minute of fluid flows through a 3 inch diameter pipe what is the average velocity of the
what monatomic ions do sulfur z 16 and aluminum z 13 form type your answer using the format cu for cu and cu2 for
a circuit is made from a capacitor and inductor only the switch is initially open and the capacitor initially carries a
an engine absorbs 172 kj from a hot reservoir at 277degc and expels 124 kj to a cold reservoir at 27degc in each
describe six physical and six chemical changes explain why each is a physical or chemical
a silver medallion is sealed within a transparent block of plastic an observer in air viewing the medallion from
suppose you carry a bag of groceries weighing 103 n from your car to your kitchen a distance of 53 m without raising or
specifically they must have complementary polarizations for example if photon a is later measured to have horizontal 0
a 455 mol sample of a diatomic ideal gas 14 expands slowly and adiabatically from a pressure of 410 atm and a volume
a bead of mass m is restricted to slide on a frictionless wire the wire lies in a vertical plane and has the shape
two particles each weigh 104 n find the magnitude of their mutual gravitational force when they are separated by a
an ideal gas is taken through a carnot cycle the isothermal expansion occurs at 240degc and the isothermal compression
consider a uniformly solid hemisphere of radius r and mass m1 determine the center of mass2 determine the principal
air that occupies 015 cubic meters at 103e05 pa gauge pressure is expanded isothermally to atmospheric pressure and