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an ice skater has by herself a moment of inertia of 55 kg m2 with her arms out with her arms in it is 50 kg m2 she is
two containers are connected by an open tube one container a is at 300k the other b is at 600k these two containers
lakes that have been acidified by acid rain can be neutralized by the addition of limestone caco3 how much limestone in
285 moles of nitrogen at a temperature of 205 degree celsius are confined to a rigid whose volume is 350l the pressue
a room measures 20 m by 55 m by 50 m the heating and air-conditioning ducts to and from the room are circular with
a sample of helium gas occupies a volume of 38l at 780 torr and 25ordmc what volume would the gas occupy at standard
two billboard workers stand on a 50 m scaffold supported by ropes at each end one worker who weighs 735 n stands 10 m
a certain satellite travels in an approximately circular orbit of radius 22 times 106m with a period of 8 h 15 min
butane c4h10 is used as a fuel where natural gas is not available how many grams of butane will fill a 350 liter
a 100 kg man is three fourths of the way up a 10 m ladder that is resting against a smooth frictionless wall the ladder
four point charges have equal magnitudes three are positive and one is negative as the drawing shows they are fixed in
under conditions for which chlorine gas has an effusion rate of 24x10-6 mol sec-1 what would be the effusion rate for
a 563 kg car moving at 197 ms hits from behind another car moving at 146 ms in the same direction if the second car has
write net bronsted equations and determine the equilibrium constants for the acid-base reactions that occur when
a toroid having a rectangular cross section a 200 cm by b 300 cm and inner radius r 380 cm consists of 500 turns of
an automobile tire at 320 psi at 250ordmc is driven on a trip at the end of the trip the pressure is 350 psi what is
two objects attract each other with a gravitational force of magnitude 930 10-9 n when separated by 192 cm if the total
the specific heat of solid gold is 013 jg c how much heat is needed to raise the temperature of 250 g of gold from
intelligent beings in a distant galaxy send a signal to earth in the form of an electromagnetic wave the frequency of
a sample of n2 g effuses through a tiny hole in 190 s how long would it take for a sample of n2o2 g to effuse under the
a solenoid 163 m long and 223 cm in diameter carries a current of 249 a the magnetic field inside the solenoid is 307
a sample of oxygen gas is collected over water at 23ordmc at a barometric pressure of 751 mmhg the vapor pressure of
what is the ph of the buffer that results when 125 g of nah2po4 and 220 g na2hpo4 are mixed and diluted with water to
a 100- shell is traveling horizontally to the right at 250 relative to the ground when it explodes into two fragments
the solubility product constant for ceio33 is 32x10-10 what is the ce3 concentration in a solution prepared by mixing