Experimenters at the National Institute of Standards and Technology have made precise measurements of the speed of

Question:

Experimenters at the National Institute of Standards and Technology have made precise measurements of the speed of light using the fact that, in vacuum, the speed of electromagnetic waves is ℓ = 1√µ0ε0, where the constants µ0 = 4π x 10–7 N ∙ s2/C2 and ε0 = 8.854 x 10–12 C2/N ∙ m2. What value (to four significant figures) does this formula give for the speed of light in vacuum?