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?

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).