You are sitting in a rowboat on a lake, watching waves created by a passing motorboat. If you count 4 crest pass every second, and the crests are 5 feet apart, what is the speed of the water waves?
f=4hz
lambda=5ft
f*lambda=velociy
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To determine the speed of the water waves, we can use the formula:
Wave Speed = Frequency * Wavelength
Given that the frequency is 4 crests passing every second and the distance between the crests (wavelength) is 5 feet, we can plug in these values to calculate the wave speed.
Wave Speed = 4 crests/second * 5 feet/crest
Wave Speed = 20 feet/second
Therefore, the speed of the water waves is 20 feet per second.
To determine the speed of the water waves, we need to consider the relationship between the number of crests passing by and the distance they cover in a given time.
In this scenario, you have mentioned that 4 crests pass every second, and the distance between the crests is 5 feet. So, in one second, the water waves travel a distance equal to the distance between 4 crests.
To calculate the speed, we can multiply the number of crests passing per second by the distance between each crest.
Speed = Number of crests per second * Distance between crests
In this case, the speed of the water waves would be:
Speed = 4 crests/second * 5 feet/crest
By multiplying these values together, we find:
Speed = 20 feet/second
Therefore, the speed of the water waves in this scenario is 20 feet per second.