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in starting an exercise a 161 m tall personlifts a 218 kg book on the ground so it is 226m above the ground what is the
a football player runs directly down the field for 29m beforeturning to the right at an angle of 34o from hisoriginal
the equation of a transverse wave on a string is y 20 mm sin22m-1x - 675s-1t the tension in the stringis 10 na what is
if 3278 ml of naoh solution is required to neutralize 2000 ml 0f 02500 m of oxalic acid h2c2o4aq what is the
1 two sides of a triangle are 169 cm and 295 cm with tehincluded angle 113o what is the length of the thirdside answer
you buy a bottle of 500 mg vitamin c tablets and determine by titration that on average each table contains 700 x 10-4
a velocity selector has an electric field of magnitude 2620 ncdirected vertically upward and a horizontal magnetic
twenty-five tons of coal that is 36 sulfur by mass is burned at an electric power plant during the combustion of the
a gas is compressed at a constant pressure of 0800 atm from900 l to 200 l in the process400 j of energy leaves the gas
find the equilibrium concentrations of a and b for a2 and b1 assume that the initial concentration of is a 10 and that
a liquid compound has a boiling point of 150degrees c unfortunately it is not thermally stable and decomposes at
an airplane maintains a speed of 630 kmh relative to the airit is flying through as it makes a trip to a city 750km
what volume of 01m hcl must be added to 20 ml of 04m phosphate buffer ph 650 to reduce the ph to 55 pk of phosphate
a stock solution was prepared by dissolving 3400 g of sodium hydroxide in 200l of water after preparing the solution
in the bohr theory of the hydrogen atom an electron moves in acircular orbit about a proton the radius of the orbit
an extreme amusement park ride accelerates its riders upward from rest to 500 ms in 700 seconds ignoring air resistance
for an enzyme assay you require a 50 mm tris-hcl buffer ph 78 how many grams of tris mw 121 pka 81 and how any ml of
at a certain part of yourdrive from home to school your car mass 1400 kg will coast inneutral at a constant speed of
the problem is determining the index of refraction a microscope focuses on a tiny scratch in the upper surface of a
a buffer is prepared by mixing 500 ml of 04 m na2hpo4 with 500 ml of 02 m nah2po4 what is the ph of this buffer what
for one mol sample of an ideal gas at stp is it possible to suggest an isobaric process that will result in the volume
light from an argon laser strikes a diffraction grating that has 5340 linescm the central and first order principal
water drips at a constand rate from a faucet that is 500cmabove a sink just as one drop hits the sink another drop is
the concentration of ammonia in a solution is 010m what is the concentration of hydroxide ion in the solution the kb of
a the empire state building is 450 meters high a pennydropped from the top would have what speed when it hits