Question

A: the period of the wave
B: frequency of the wave

Answer 1

Period of the wave:
`T = 0.4 \text{ seconds}`

Frequency of the wave:
`f = 2.5 \text{ Hz}`

Step-by-step explanation:

Period of the wave:To calculate the period of a wave from a displacement vs time graph we identify the amount of time it takes for one cycle to be completed. According to the graph, 1 cycle is completed in 0.4 seconds, so:

`T = 0.4 \text{ seconds}`

Frequency of the wave: To find frequency we simply calculate the inverse of the period because we know the relationship
`T= (1)/(f)` or
`f = (1)/(T)`

`f= (1)/(T)= (1)/(0.4 s)= 2.5 \text{ Hz}`