Tectonic plates are large segments of the earth's crust that move slowly. suppose one such plate has an average speed of 6.0 cm per year. (a) what distance does it move in 71 seconds at this speed?
m
(b) what is its speed in miles per million years?
mi/my

1.35×10⁻⁷ m

37.278 mi/My

Explanation:

Speed of the tectonic plate= 6 cm/yr

Converting to seconds

So in one second it will move

In 71 seconds

The tectonic plate will move 1.35×10⁻⁵ cm or 1.35×10⁻⁷ m

Convert to mi/My

1 cm = 6.213×10⁻⁶ mi

1 M = 10⁶ years

Speed of the tectonic plate is 37.278 mi/My

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

nah.   i'm just sleepy.