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a solution is made by mixing 250 ml of 20 m sodium sulfate with 500 ml of 050 m sodium sulfate assuming that
a certain object has a mass in air of 0422 kg and a mass whensubmerged in benzene dbenzene 090 x 103 kgm3 of 0367 kg
a three-legged wooden bar stool made out of solid douglas firhas legs that are 25 cm in diameter when a 70 kg man sits
the decomposition xy is second order in xy and has a rate of 702 e-3 m-1 s-1 at a certain temperaturea what is the
a wire has a current density of 170 amm2 if thedrift velocity is 40 x 10-8 ms how many free electrons does the wire
abullet of mass m 0010 kg andspeed v passescompletely through a pendulum bob of mass m 12 kg thebullet emerges with a
two parallel plates having charges of equal magnitude but oppositesign are separated by 12cm each plate has a charge
when 204 grams of the strong electrolyte sodium phosphate are dissolved in 143 grams of watera what is the molality of
a uniform solid sphere of radius r 050 m and a mass 15 kgrotates about the z-axis through its center find its angular
in the park a mom pushes tangentially on a hand-drivenmerry-go-round and is able to accelerate it from rest to
imagine that you have a 650 l gas tank and a 400 l gas tank you need to fill one tank with oxygen and the other with
2 kg mass is slidingover a frictionless surface with a velocity of 7 ms when itenocunters a frictionless ramp as shown
a fireworks rocket is launched vertically into the night dky with an initial speed of 476ms the rocket coasts after
monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry a particular alloy with a
an engine absorbs 1695 j from a hotreservoir and expels 1204 j to a coldreservoir in each cyclea what is the engines
a 100 kg box is pulled by a rope in the direction 20 degreesabove the horizontal the box is moving in horizontal
the following data were obtained from experiments to find the molecular formula of procaine a local anesthetic which
a 13 g bullet traveling 235 ms penetratesa 20 kg block of wood and emerges cleanly at 174 ms if the block is stationary
you are standing at a distance d from a speaker that emits sound waves in all directions you walk 250 m toward the
the 2 ml of 02 m solution of naoh was added in 10 ml of 004 m solution of h3po4 calculate the concentration of hpo42-
a 9200 kg boxcar traveling at 18 ms strikes a second boxcar at rest the two sticktogether and move off with a speed of
an ac generator has 90 rectangular loops on its armature each loopis 15 cm long and 6 cm wide the armature rotates at
uranium hexaflouride is a solid at room temperature but boils at 56 c determine the density of uranium hexaflouride at
an ideal gas has a pressure of 25 atm a volume of 10 l at a temperature of 30deg c how many molecules are there in the