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why is it that a grow-lamp tube has an apparent color temperature of 5500 k and is cool to the touch however the much
an object travels halfway around a circle at a constant instantaneous speed v what is the magnitude of its average
why is the spectrum from a black body source continuous while a spectrum for a gas discharge source of the same
part a it takes 470 j to raise the temperature of an 920 g piece of unknown metal from 13 degrees celsius to 249
a tennis ball of mass m 600 g and speed v 250 ms strikes a wall at a 45ordm angle and rebounds with the same speed at
please explain with calculationswhat is the a ldquocurrentrdquo due to the electron orbiting in a circular path about
discuss what it was about about blackbody radiation that classical physics was unable to explain how did plancks theory
part acalculate the enthalpy change delta h for the process in which 326 g of water is converted from liquid at 12 c to
an emf source with a magnitude of 120 a resistor with a resistance of 910 and a capacitor with a capacitance of
a student takes 005 moles of hcl and reacts it with 005 moles of sodium hydroxide in 100 g of water solution in a
consider a heavy particle of mass m is place at the top on the outside side not inside of a vertical hoop of radius r
7125 steam enters an adiabatic turbine at 7 mpa 600 degrees c and 80 ms and leaves at 50 kpa 150 degrees c and 140 ms
find delta edeg for the reaction below if the process is carried out at a constant pressure of 100 atm and at 25 c and
compare the boltzmann distribution the bose-einstein distribution and the fermi-dirac distributionestimate e - microkt
a copper bar is moved to the right while its axis is maintained in a direction that is perpendicular to a magnetic
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
the mass of a hydrated caso4bull x h2o sample is 308 g after heated gently for 20 min the mass of the sample reduces to
in mid-nineteenth century england horses were often used to pull barges along canals the horse naturally trudged along
vitamin c contains 4092 c 458 h and 545 o by mass what is the empirical formula of vitamin
a convex spherical mirror whose focal length has a magnitude of188cm is to form an image112cm behind the mirrora where
nitric acid production starts from ammonia the process starts with the oxidation of ammonia to nitrogen dioxidenh3 g
a 684-kg skier coasts up a snow-covered hill that makes an angle of 255 deg with the horizontal the initial speed of
a cyclotron designed to accelerate protons has a magnetic field of magnitude0260t over a region of radius 240ma what is
002 100 points a plane designed for vertical takeoff has a mass of 71 times 103 kg find the net work done on the plane
an electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of450mt the angular