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a wheel is rotating freely with an angular speed of 20 rads on a shaft whose moment of inertia is negligible a second
a 1200 car is moving on the freeway at 600 what is the magnitude of its momentum in si units what is the magnitude of
a quasars spectrum shows a shift in spectral lines of 0158 use the doppler-shift formula to determine what recession
a galaxy has a rotation speed of 200 kilometers per second at a distance from its center of 10 kiloparsecs what is its
a an ideal gas occupies a volume of 30 cm3 at 20degc and atmospheric pressure determine the number of molecules of gas
a steel wire with mass 255 g and length 116 m is strung on a bass so that the distance from the nut to the bridge is
if cost per gram were not a concern which of the following substances would be the most efficient per unit mass for
when a tuning fork of frequency 360 hz is held above a tube filled with water the resonances are found when the water
to determine the specific heat of an object a student heats it to 100 degrees c in boiling water she then places the
a find the phb how many grams of koh must be added to 0500 l of the buffer to change the ph by 010
170 ml of an hcl solution with ph of 230 is added to 200 ml of an hno3 solution the resulting ph is 140 what was the ph
a string 19 m long with a mass of 26 g is stretched between two fixed points with a tension of 80 nfind the frequency
a piano tuner stretches a steel piano wire with a tension of 765 n the steel wire has a length of 0900 m and a mass of
what is the anticpated rate in grams per minute at which ethanol will be formed at a rate of 100 l per minute at 573 k
a buffer is prepared by dissolving 52203g of hno2 and 65552g mgno22 into water forming 25 l of solution what is the ph
a pair of in-phase stereo speakers is placed side by side 080 m apart you stand directly in front of one of the
a satellite of the earth has a mass of100kg and is at an altitude of100multiplied by106ma what is the gravitational
1 a first-order reaction has rate constants of 45 10-2 s-1 and 90 10-2 s-1 at 0degc and 20degc respectively what is the
how much energy is required to move a600kg object from the earths surface to an altitude twice the earths
at the earths surface a projectile is launched straight up at a speed of105kms to what height will it rise ignore air
the explosive nitroglycerin decomposes rapidly upon ignition or sudden impact according to the following balanced
limonene mw 136 is a pleasant smelling liquid found in lemon and orange peels the bp of limonene is 175 but it
3 isomerse-12-diisopropylethenez-12-diisopropylethene11-diisopropylethenewhat is the order of stability of these three
the standard enthalpy of formation of gaseous water is -24182 kjmol at 298 k estimate this value at 370 k the molar
how many milliliters of 26 m nh4cl must be added to 260 ml of 020 m nh3 to obtain a buffer solution having