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a helium balloon lifts a basket and cargo of total weight 2080 n under standard conditions at which the density of air
a solution is prepared by dissolving 108g ammonium sulfate in enough water to make 100 ml of stock soultion a 1000 ml
two satellites are in circular orbits around the earth satellite a is at an altitude equal to the earths radius while
a gas of twice the molecular weight as co2 will pass through a small hole how much faster than
a 24 kg solid cylinder radius 020 length 055 is released from rest at the top of a ramp and allowed to roll without
assuming ideal gas behavior which of the following gases would have the lowest density at standard temperature and
two shuffleboard disks of equal mass one orange and the other yellow are involved in an elastic glancing collision the
a 500ml canister of freon-12 cf2cl2 was heated in boiling water 1000ordmc until the canister burst if the canister was
number of stereoisomers possible for each of the following substances draw them and name each by the r-s and e-z
two steel wires of the same length one with radius r and the other with radius 3r are connected together end to end and
you are standing at x 85 km lightning bolt 1 at x0 km and lightning bolt 2 at x 130 km both flashes reach your eye at
if 4800x 10-5 mol of uranium-238 will effuse through a hole in 125 seconds how many mol of uranium-235 will effuse
someone is pulling a suitcase through an airport at constant speed the handle of the suitcase makes an angle of 55
light of wavelength 0514 microm in air enters the water in a swimming pool the speed of light in water is 0710 times
a 40l sample of n2 g at 760 mmhg is compressed at constant temperature to 32atm what is the final gas
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