An electric field E = 2.00×105 N/C, right causes the 2.0 g ball in the figure...

Question

Question

An electric field E = 2.00×10⁵ N/C, right causes the 2.0 g ball in the figure to hang at an angle.

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What is θ?

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Answer 1

Answer #1

find the force created by the particle.
this is qE
F = (25 x 10^-9) * (2x10⁵) = 5 x 10^-3 N

F due to gravity is mg,

F = .002 * 9.81 = 1.962 x 10^-2 N

now we know both forces, and we can find the angle using tan

tan^-1(5x10^-3 / 1.962x10^-2 ) = θ

θ = 14.297 degrees

Answer 2

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