A cello string is 0.695 m long and
plays a 98.0 Hz note. What is the
speed of the waves in the string?
(Unit = m/s)

Identify two factors that determine the rate of stream erosion

What is hidden during a lunar eclipse? isn't the moon hidden?

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?