Bees acquire an electric charge in flight from friction with the air, which caus

Question

Bees acquire an electric charge in flight from friction with the air, which causes pollen to cling to them. The pollen is then attracted to the stigma of the next flower . Suppose the bee's body has a charge of 1.0×10^9 C and is about 3 ×10^3 m from the front edge of a spherical granule of pollen (whith a diameter 5 ×10^5 m) Charged particles in the pollen become polarized with +10^11C on the front edge and 10^11C on the backside of the pollen (3 ×10^3 + 5 ×10^5 m from the bee).What physical quantities can you determine?

Explanation / Answer

Physical quantities can be determined,

(a)

force exerted on the bee by the polarized charge distribution on the pollens.

(b)

electric potential energy of the bee-pollen system.

(a)

F = Force of positive polarized face - Force of negative face

F = k*qbee*10^(-11) / (3*10^(-3))^2 -  k*qbee*10^(-11) / [3*10^(-3) + 5*10^(-5)]^2

F = 3.15*10^(-7) N

(b)

U = Potential of front face + potential of bac face

U =  k*qbee*10^(-11) / (3*10^(-3)) + k*qbee*10^(-11) / [3*10^(-3) + 5*10^(-5)]

U = 5.94*10^(-8) J

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