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you want to build a grandfather clock with a pendulum that has one second between its tick swinging to and its tock
calculate the concentration of permanganate when 1g of potassium permanganate is dissolved in 50ml of
the gravitational force between two electrons 100 m apart is542x10-71 n find the mass of an
it takes a force of 80n to compress the spring of a toy pop gun 02m to load a 150kg ball with what speed will the ball
compare the rate of effusion of nh3 with that of n2 at the same temperature and pressure compare the time required for
aqueous ammonia solutions are weak bases they are obtained by bubbling ammonia gas in water if 845 ml of gas at 100 atm
if 1875 mol of helium gas is at 100c and a gauge pressure of0350 atma calculate the volume of the helium gas under
a 250g bullet traveling at a speed of 425 ms strikes a wooden block of a ballistic pendulum the block has a mass of
if 50l of nitrogen at 12degc and 130atm pressure reacts with the same volume of hydrogen at the same temperature and
a boy has a 100-g stone he places it in a leather pouch attachedto the end of a 1-meter leather thong he whirls the
ammonia is kept in a cylinder with a movable piston at 25degc and 250atm what is the pressure in the cylinder if the
an object is thrown straight up with an initial velocity of 46msand an acceleration of gravity of 98 find the distance
the pumps coefficient of performance is 38 and the heat pumpdelivers 754 mt of thermal energy to the building each hour
ammonia is kept at 15degc in a 100l flask with a pressure of 195 atm what is the pressure in the flask if the
an ordinary glass is filled to the brim with 350 ml of water at 100 degrees celsius if the temperature decreased to 20
the average speed of a nitrogen molecule at 25 0c is 515 ms what is the average speed of an ammonia mole at that
ed rode a bicycle thatwas pulled by an automobile in this way ed rode his bike 2000 min 683 seconds suppose the angular
what is the maximum number of electrons in an atom whose highest-energy electrons have the principal quantum number n
determine the molarity of a solution made by dissolving 248 g of sodium chloride in 7500 ml of
in coming to a stop a car leaves skid marks 92m lng on thehighway assuming a deceleration of 700 ms2 estimate the speed
what patterns do you notice about the charges of the ions with respect to their positions in the periodic table or
a world-class sprinter can burst out of the blocks to essentiallytop speed of about 115 ms in the first 150 m of the
calculate the volume of 0188 m hno3 required to neutralize 250 ml of 0250 m baoh2
a car traveling 88 kmh is 110 m behind a truck traveling 75 kmh how long will it take the car to reach the
a jet moving 5000 kmh due east is in a region where the windis moving at 1200 kmh in a direction 3000 degrees north of