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it has been said that george washington in his youth threw a silver dollar across a river assuming that the river was
a bat is flying 5 ms while chasing an insect that is flying in the same direction the bat emits a 400 khz chirp and
within the bohr model of the hydrogen atom the radius of the orbit for the ground state was 5292 x 10-11 m using de
butane is normally supplied in metal containers under pressure as a mixture of liquid and gas so high temperatures may
a satellite circles planet zeron every 98 minutes the mass of the planet zeron is known to be 50x 10 24 kg what is the
at 20 0c and 35 bar pressure ethane exists as both a liquid and a gas use the redlich-kwong equation to determine the
an earth satellite moves in a circular orbit with an orbital speed of 5200 msa find the time of one revolutionb find
a 2000 kg satellite is in a circular orbit of radius 60000 km from the center of the earth determine the gravitational
the ph of a 300 gram solution of naoh is 1297 the density of the solution is 110 gml how many grams of naoh are in the
a baskerball player makes a jump shot the 0600 kg ball is released at a height of 20 m above the floor with a speed of
the importance of the hydroxyl radical in reacting with and eliminating many atmospheric pollutants however the
a 11-g piece of styrofoam carries a net charge of -085 c and floats above the center of a large horizontal sheet of
when connected to a 120 v source an electric heater is rated at 1200 w and a toaster at 60 102 w if both appliances are
calculate the ph at the equivalence point in titrating 0120 m solutions of each of the following with 70times10-2 m
copper has two naturally occuring isotopes 63cu isotopic mass 629396 amu and 65cu isotopic mass 649278 amu if copper
the temperature of 1000 ml of water was raised from 267 degrees celsius to 623 degrees celsius how much heat in
a distant galaxy is moving away from the earth with a speed that results in each wave- length received on the earth
according to the equation how many grams of sodium acetate will you need to add to 125 ml of 0100 m acetic acid to make
two pieces of optically flat glass n 150 touch at one edge and a separated by a thin stretched fiber at the opposite
the henrys law constant of co2 in water at 250c is 0167x109pa if the partial pressure of co2 over water is 1 bar
a parallel plate capacitor has a potential difference between the plates of 80 v if the charge on one of the plates of
find the uncertainty in position in m associated with a 650 kg automobile that is moving at 55 kmhr the uncertainty in
a 029 micro farad capacitor is connected across an ac generator that produces a peak voltage of 104 vpart a what is the
when you look at a clock on a space ship zooming by you at a fair fraction of the speed of light you see the clock on
hydrogen cyanide hcn is a poisonous gas that is used in gas chambers for the execution of those sentenced to death it