3. The doctor notices that Janet has long fingernails, and comments that fingernails grow at a rate (or speed) of 2.50 cm / year. Convert this speed to kilometers / second. Show your work. (6 pts)

7.93 × 10⁻¹³ km/s

Explanation:

Step 1: Given data

Rate of growth of the fingernails (r): 2.50 cm/year

Step 2: Convert "r" from cm/year to km/year

We will use the following conversion factors.

Step 3: Convert "r" from km/year to km/s

We will use the following conversion factors.

2.50 cm/year is equal to 7.93 × 10⁻¹³ kilometers/second.