Question

The question below refers to the following graph.
https://clackamasweb.owschools.com/media/g_ipc_2014/10/wave_props_10.gif

What is the approximate period of this wave?

15 centimeters
15 seconds
10 seconds
5 seconds

Answer 1

The period is how long it takes one full cycle of the wave to occur. The easiest way to see a full cycle is to measure from peak to peak or trough to trough. How long does it take to go from one to the next?

Answer 2

10 seconds?

Answer 3

Yup!

Answer 4

thank you:) can you help ,e with couple more questions?

Answer 5

Sure

Answer 6

What is the wavelength of this wave?

15 cm
60 cm
cannot be determined

Answer 7

with the same picture

Answer 8

15 cm?

Answer 9

The 15 you're seeing in the graph is the displacement of the wave from its starting point - in other words, its amplitude.

This is an amplitude vs. time graph, so it's only telling you how big the wave is across time, allowing to find the period (and frequency). However, the graph doesn't tell us how FAR the wave has traveled in the direction it's propagating. If we had a way to find the speed of the wave, such as in an amplitude vs. distance graph, we'd be able to find the wavelength using v=λf...but unfortunately here we can't.

Answer 10

so it cannot be determined?

Answer 11

Right

Answer 12

thnx:)