Question

The speed of light is now defined to be 2.99792458 * 108 m/s. Express the speed of light to (a) three significant figures, (b) five significant figures, and (c) seven significant figures.

Answer 1

hint: when you have something like 1.23456789 x10^7

three significant figures would be 1.23 x 10^7

five significant figures would be 1.2345 x10^7

seven significant figures would be 1.234567 x 10^7

does that help?

Answer 2

Yes it makes plenty sense.

Answer 3

indeed it does

Answer 4

Thank you. I understand now.

Answer 5

welcome