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each croquet ball in a set has a mass of 051 kg the greenball traveling at 123 ms strikes the blue ball which is atrest
the energy from radiation can be used to cause the rupture of chemical bond a minimum enery of 941 kjmol is required to
what concentration of the barium ion ba2 must be exceeded to precipitate baf2 from a solution that is 10010-2 m in the
what is the total pressure of a mixture of the following gases oxygen with a partial pressure of 221 mmhg nitrogen with
a circular coil of 180 turns has aradius of 130 cm a calculate the current that results in a magnetic dipole moment of
a boy on a 22 kg skateboard initially at rest tosses a 75 kg jug of water in the forward direction if the jug has a
a ballon is filled with h2 gas and has a pressure of 110 atm volume of 102l and a temp of 298 k how many grams of h2
a spring with k128 nm is compressed to a distance 20 pastequillibrium and is used to project a ball with mass 4
when a 689-g sample of cacl2 dissolves in 250 g water in a coffee cup calorimeter the temperature rises from 220 to 269
a certain pesticide is fatal to fish fingerlings at a level of 050 parts per million in water a leaking metal can
a student holds a tuning fork oscillating at 256 hz he walkstoward a wall at a constant speed of 133 msa what beat
the work to required to strech a certain spring by an elongation of 400 cm to an elongation of 500cm is 305 j ais the
a cable is lifting a construction worker and a crate the weights of the worker and crate are 965 and 1510 n
a 643-g piece of aluminum at 94 degc was immersed into 700-g water at 250 degc the water temperature rose to 364 degc
a vertical spring stores 0962 j in spring potential energy whena 35-kg mass is suspended from itaby what
a helicopter drops an inflatable raft to flood victims floating ina lake when the raft is released the helicopter is 50
how many g of product are actually used when a chemist calculates the theoretical yeild of a product at 201 g and the
a 1200 rm kg car moving at 88 rm kmh collides with a 7600rm kg truck moving in the samedirection at 65 rm kmh the two
aniline is an organic base used in the manufacture of dyes calculate the in a 012 solution of aniline
assume that a loudspeaker broadcasts sound equally in alldirections and produces sound with a level of 109 db at a
when heated potassium chlorate decomposes to yield oxygen and potassium chloride calculate how much heat is needed to
a 50-gram ice cube at -30 degrees celcius is heated until 45g hasbecome water at 100 degree celcius and 5g has become
a cylindrical cistern constructed below ground levelis 28 m in diameter and 20m deep and is filled to the brim with a
ball a moving to the east collide with ball b and c which are atrest after collision ball b went northe with speed of 3
what is the temerature in c of gas if the volume is changed to 579 l and the pressure is changed to 765 mmhg if the gas