Physics homework question

Question

The speed of light is now defined to be c = 2.99792458 ✕ 10⁸ m/s

(a) Express the speed of light to three significant figures. (Enter a number with the correct number of significant figures)

(b) Express the speed of light to five significant figures.

(c) Express the speed of light to seven significant figures.

Answer 1

(a) To three significant figures, the speed of light is approximately 3.00x10⁸ m/s

(b) To five significant figures, the speed of light is approximately 2.9979 x 10⁸ m/s.

(c) To seven significant figures, the speed of light is approximately 2.997925 x 10⁸ m/s.