00:01
Here the wavelength of the wave is given by this distance.
00:06
So this is 8 meter.
00:09
So wavelength of the wave lambda equals to 8 meter.
00:14
Now the time taken by the boat to travel from the highest point to the lowest point is 4 second.
00:21
Time taken by this distance to cover this distance is 4 second.
00:25
So time period t equals to 2 into t, the time taken to travel from highest to lowest distance.
00:34
So that is 2 into 4 second equals to 8 second.
00:42
So frequency of the wave mu equals to 1 over time period t.
00:55
So this is 1 by 8 hertz.
00:59
So this is equal to 0 .125 hertz.
01:05
So speed of the wave v is given by mu times lambda, frequency times wavelength.
01:22
So which is equal to, so frequency is 0 .125 hertz into 8 is the wavelength.
01:36
So speed is meter per second.
01:39
So speed of the wave is 1 meter per second.
01:45
Now in part b, we are asked what is the amplitude of the wave.
01:52
So amplitude of the wave is given by half of this height.
02:02
So this is the amplitude.
02:04
Now this total height is 3 meter...