The height of mercury in a barometer at a place is 64cm. what would be the height of water in the barometer at the same place, if the density of mercury is 1300kg/m3

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered

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