If ten waves pass a given point in two seconds, then what is the frequency of the waves? ? asap pls

"Frequency" is just the number of complete waves
that pass by in ONE second.

If ten waves passed by in 2 seconds, then
5 of them passed by in each second.

The frequency is  5 per second.  That's  5 Hz.  (Choice-B)

The car would move to the right with 150 n of force. the 150 n of force from friction and air resistance slows the car from moving to the right with 300 n of force.

Answerwavelength;