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a 20 kg hoop rolls without slipping on a horizontal surface so that its center proceeds to the right with a constant
h2s and h2o have similar structures and thier central atoms belong to the same group yet h2s is a gas at room
a paperweight is made of a solid glass hemisphere with index of refraction 150 the radius of the circular cross section
explain how micelles and more complex solutions work consider all solute-solute solvent-solute and solvent-solvent
a block of mass 75kg is sliding along a frictionless table with height of 12mnbsp the block travels the length of the
the nucleus of a promethium-145 atomcontains 61 protons assume that thenucleus is a sphere with radius 569fm and with
if 45 ml of 0250 m pbcl4 solution reacts with 20 ml of nh42so4 what is the molarity of the
obtain the wavelength in vacuum for blue light whose frequency is 6253 x 1014 hz express your answer in nanometers 1 nm
a weak acid ha pka500 was titrated with 100m koh the acid solution has a volume of 10000ml and a molarity of 0100m find
at what distance along the central axis of a uniformly chargedplastic disk of radius r 140 m is themagnitude of the
suppose 238 l of an ideal monatomic gas at a pressure of 260 105 kpa is expanded adiabatically no heat transfer until
a compound is 800 carbon and 200 hydrogen by mass assume a 100- sample of this compound how many grams of each element
a rope of length 8 meters and mass 004 kg is fixed at both ends the tension of the rope is 49 n what are the positions
because molecular bromine is a strong and toxic oxidant excess bromine is neutralized addition of the aqueous sodium
two people one having a mass of 40 kg and the other having a mass of 60 kg stand at one end of a small uniform boat of
two racing boats set out from the same dock and speed away at thesame constant speed of 809 kmh for half an hour 0500 h
the bromination solution is prepared by mixing liquid bromine with glacial acetic acid 14 vv bromine to acid the
consider water vapor h2o at 26 degc what percentage of water vapor molecules have a speed within 1 ms of the most
a charge of 230 muc is located at 440 m 622 m and a charge of -150 muc is located at - 450m 675m nbspwhat charge must
1 you find a reagent bottle with a colorless iodide salt inside the label on the bottle says cobalt iodide is the
three point charges have equal magnitudes two being positiveand one negative these charges are fixed to the corners of
explain maxwells distribution diagram and how does it relate to temperatures what happens to this distribution as the
a sample of solid aluminum with a mass of 175 kg is cooled at constant pressure from 300 to 265 k calculate the entropy
an ordinary glass is filled to the brim with 3340 ml of water at 100degc if the temperature decreased to 12degc how