Question

A sound wave travels through iron at a rate of 3120 / s . At what rate does the sound wave travel in / h?

Answer 1

11,232km/h

Explanation:

You have 3120m/s and want kilometers per hour. There are 1000m in 1km, and 3600sec in 1h:

`(3120)/(1) (m)/(s) * (1)/(1000) (km)/(m) * (3600)/(1) (s)/(h)`

Meters cancel. Seconds cancel. This leaves kilometers per hour:

`(3120 * 3600)/(1000) (km)/(h) = 11232 (km)/(h)`