What does 4 x 10^-5/hr mean?

Question

What does 4 x 10^-5/hr mean?

Answer 1

It's scientific notation, but specifically means 4 * (1/10⁵)

 

When you raise a base to a negative power, that means you take the reciprocal of the base and raise it to the positive power. 

 

10⁵ = 100,000

 

So we have 4/100,000 = 1/25,000