Amountain 20.0 km from a person exerts a gravitational force on him equal to 1.85% of his weight. (a) calculate the mass (in kg) of the mountain. kg (b) compare the mountain's mass with that of earth. mmountain mearth = (c) what is unreasonable about these results?

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two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

electrical power