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a blackbody emits light with a frequency of 154 x 1014 s-1 the total energy emitted per second at this frequency is 102
at 250 c a solution has a concentration of 3179m and a density of 1260 gml the density of the solution at 500 c is 1249
a positively charged particle of mass 660 10-8 kg is traveling due east with a speed of 35 ms and enters a 039 t
an archeologist has discovered an old artifact its carbon-14 content is found to be 417 of that in a fresh sample of
silver chloride often used in silver plating contains 7527 what is the mass of silver chloride required to plate 285
carbon-14 dating can be used to estimate the age of formerly living materials because the uptake of carbon-14 from
during the the a compact disc cd accelerates from rest to a constant rotational speed of 900 revmin it rotates through
fecl3 reacts with only one of the two compounds aspirin and salicylic acid with which part of a molecule does fecl3
two cars of equal mass collide on a horizontal frictionless surface before the collision car a is at rest while car b
a box of 300n weight is at rest at the bottom of the plank that is 500m long and rises 30 degrees above ground then the
a heat pump has a coefficient of performance of 375 and operates with a power consumption of 693 103 wa how much energy
george is making spaghetti for dinner he places 401 kg of water in a pan and brings it to a boil before adding the
a shell is fired with a horizontal velocity in the positive x direction from the top of an 80 m high cliff the shell
a solution is prepared by disolving 060 g of nicotine a nonelectrolyte in water to make 12 ml of solution the osmotic
a landing airplane makes contact with the runway with a speed of 40 ms and moves toward the south after 8 minutes the
the vapor pressure of pure water at 25 celcius is 238 torr what is the vapor pressure torr of water above a solution
procaine hydrochloride m 27277 gmol is used as a local anesthetic calculate the molarity of a 4666 m solution which
a 2298 g ice cube at -945 oc is place in an aluminum cup whose initial temperature is 7996 oc the system comes to an
if you fill your tank with 41 of gasoline by how much does the cars mass
the radius of an atom of gold au is about 135 angstron a express this distance in nanometers and in picometers b how
consider the following reaction where has a mass of 14003 074 u has a mass of 12000 000 u d has a mass of 2014 102 u
a block of mass m is attached to a spring ofspring constant k and is moving with constant speed in a horizontalcircle
a serving of kellogs corn flakes is 00892 k by mass the usrda for potassium is 60g if one serving of corn flakes has a
a covex lens of focal length 10 cm placed 40 cm in front of aconcave lens of focal length 25 cma small object is placed
based on the following equation determine the mass of a 500ml sample of your salt solution report the mass as a number