Three points charges -6 micro coulomb,10 micro coulomb and -7 micro coulomb are placed conservatively at corners of a square each side of which is 30cm. calculate E at a vacant corner. take k=9.0×10^9 Nm^2C^-2

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.