Work out? Two identical charged bodies are 3 cm apart exert a force of #4 × 10^-4\ "N"# on each other. The charge on each body is_______? Thanks

Answer 1

#"6.32 nC"#

According to Coulomb's Law

#"F" = ("kq"_1"q"_2)/"d"^2#
It’s given that bodies are identically charged. So, #"q = q"_1 = "q"_2#
#"F" = "kq"^2/"d"^2#

From above

#"q = d"sqrt("F"/"k")#
#color(white)("q") = "0.03 m" × sqrt((4 × 10^-4\ "N")/(9 × 10^9\ "N m"^2"/C"^2))#
#color(white)("q") = 6.32 × 10^-9\ "C"#
#color(white)("q") = 6.32\ "nC"#
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Answer 2

The charge on each body is ( 8 \times 10^{-6} ) Coulombs.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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