1.a wave has a period of 20 seconds. what is the frequency?

2.in 4 seconds 3 waves pass a point. what is the frequency? what is the period?

3.what is the speed of a wave that has a frequency of 2hz, an amplitude of 10m, and a wave length of 5m?

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

answer(20) psi;