The wavelength of yellow light in a spectrum is about 0.00002 inches. Which number best approximates this length as a power of 10?
A. 2 x 10-5
B. 2 x 10^5
C. 2 x 10-4
D. -2 x 10^5

since the 2 is the 5th digit after the decimal, scientific notation will be 2*10^-5 thus choosing

Thus choice A is the correct answer.

what the question so we can you out

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.