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an aqueous solution containing mgcl2 and hcl was analyzed by first titrating a 2500 ml aliquot to a bromocresol green
two small positively charged spheres have a combined charge of 502times10-5 c if each sphere is repelled from the other
an electron with speedv0225times 106ms is traveling parallel to a uniform electric field of magnitudee116times 103nca
a styrofoam ball of mass 0120 g is placed in an electric field of 6000 nc pointing downward what charge must be placed
a parallel plate capacitor has a capacitance of 70 microf when filled with a dielectric the area of each plate is 10 m2
in the spring of 1996 five tank cars containing propane molar mass 4409 gmol derailed in weyauwega wi forcing
a motor is connected to a solid cylinder with a diameter of 12m and a mass of 51kg a massless rope is attached to the
a cat drops from a shelf 45ft above the floor and lands on all four feet his legs bring him to a stop in a distance of
a sphere of radius a in free space is nonuniformly charged over its surface such that the charge desity is given by
four small charged bodies of equal charges q-1nc are placed at four vertices of a rectangle with sides a4cm and b2cm
soft ionization techniques can introduce multiple charges onto a molecule to produce multiply-charged species show a
a sample of the growing outer wood of a giant sequoia tree gave 1417 times as many radioactive disintegrations of 14 c
bats use echolocation to determine their distance from objects they cannot easily see in the dark the time between the
at the time of this books printing the us national debt is about 10 trillion note before doing these calculations try
a piece of metal weighs 536 n in air 350 n in water and 422 n in an unknown metal the density of the metal is 288 x 102
the tropical year the time from vernal equinox to the next vernal equinox is the basis for our calendar it contains
the nuclide 198 au 79 has a half life of 648 hours what is the rate constant for the decay of 198 au 79 how much of a
it has been found that on average galaxies are moving away from earth at a speed that is proportional to their distance
acetylene gas c2h2 burns with oxygen in an oxyacetylene torch to produce carbon dioxide water vapor and the great heat
an automobile tire is rated to last for 35000 miles to an order of magnitude through how many revolutions will it
an electron is accelerated by a constant electric field of magnitude 280 nca find the acceleration of the electronms2b
if the average molar mass of a sample of soybean oil is 960 how many grams of are needed to saponify 25 of the
with what speed must a ball be thrown vertically from ground level to rise to a maximum height of 35 mhow long will it
using the peak intensities provided below for the molecular ion region of an unknown draw the corresponding mass
a ball of moist clay falls 177 m to the ground it is in contact with the ground for 150 ms before stopping what is the