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a pendulum is made by suspending a 1kg meter stick through a pivot locaed 3m from one end the moment of inertia of a
a home run is hit such a way that the baseball just clears a wall 23 m high located 113 m from home plate the ball is
what is the average of the velocity squared in pure oxygen o2 at standard pressure 1 bar and concentration 0001 moll
a bowling ball mass 72 kg radius 012 m and a billiard ball mass 045 kg radius 0028 m may each be treated as uniform
when a parachute opens the air exerts a large drag force on it this upward force is initially greater than the weight
a rock climber throws a small first aid kit to another climber who is higher up the mountain the initial velocity of
a uniform metal rod with a mass of 34 kg and a length of 13 m is attached to a wall by a hinge at its base a horizontal
white light is incident at 45 degrees from air onto a 60-60-60 prism in which red light has n1500 and violet has n1600
a projectile is launched at 64 degrees at 637 ms from the top of a hill how far down the hill does the projectile hit
the ph of a 0175 m aqueous solution of a weak acid is 352 what is ka for this
if 100ml of 07m hcl is mixed with 900ml of water what is the molarity of the hcl now please show the steps used to
an interior decorator install an aquarium that is 050 m wide 200 deep and 400 m long the uncertainty of each
calculate the pressure of a sample of hydrogen gas collected over water at 247c when the barometric pressure is 7298
a wrecking ball is hanging at rest from a crane when suddenly the cable breaks the time it takes for the ball to fall
consider a particle of mass m moving freely in a two dimensional rectangular box with impenetrable walls the dimensions
how much heat is required to melt 485g of ice at its melting point express your answer numerically in
an electronic advertising sign repeats a message every 82 seconds day and night for a week how many times did the
use coulombs law to calculate the ionization energy in kjmol of an atom composed of a proton and an electron separated
1 a student who was in a hurry to complete this experiment didnt completely dry the crystalline product before the
you find a pirate map which describes the path to a buried treasure starting from an old oak tree in a field the map
solve the following equation for x remember to balance the equation xe 2f2 -gt x in the above question we see the
a 20000-kg railroad car travels down the track at 30 msec and hits a second stationary railroad car of 10000 kg the
a flask containing a mixture of nh3g and ch4g is cooled at -333 degrees celcius a liquid begins to form in the flask
how much work is done in kilojoules as a result of the reaction shown 25 atm with a volume of 2l --gt 25 atm with a
two trees have perfectly straight trunks and are both growing perpendicular to the flat horizontal ground beneath them