Electric bees. As they fly through the air, honeybees can pick up a small amount

Question

Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge. Suppose a 0.12-g bee acquires a charge of -55 pC. How many has the bee acquired? Express you using two significant figures. Find the magnitude of the electric force on the bee in the electric field just above Earth's surface, 110 N/C directed vertically downward. Find the direction of the electric force on the bee in the electric field just above Earth's surface. downward upward Compare the electric force on the bee to the bee's weight. The bee's weight is some orders of magnitude small than the electric force, and directed in the opposite direction. The bee's weight is some orders of magnitude smaller than the electric force, and directed in the same direction. The bee's weight is some orders of magnitude larger than the electric force, and directed the same direction. The beer's weight is some orders of magnitude larger than the electric force, and directed in the opposite direction.

Explanation / Answer

A bee weighing 0.12g acquires a charge of -65* 10-12 C.

a) No.of excess electrons acquired by the bee=-65 *10-12/1.6 *10-9=40.6*107 electrons.

b) Magnitude of the electric force on the bee just above the Earth's surface=F=qE=-65*10-12*110=7.15*10-9 N

c) Direction of the electric force is upward.

d) Weight of bee=mg=0.12*10-3 *9.8=1.18*10-3 N

Thus the bee's weight is some orders of magnitude larger than the electric force and directed in the opposite direction.

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