PLEASE PLEASE HELP!!
A wave with a wavelength of 2 meters travels at 6 hz. What is its velocity?
3 m/s
4 m/s
8 m/s
12 m/s
And:
One-hundred (100) wavelengths pass every 5 seconds. What is the frequency of the wave?
1 Hz
20 Hz
500 Hz
It cannot be determined.
1. I assume when you say "travels at 5 Hz you mean the frequency is 6 Hz.
v= freq x wavelength. Substitute and solve for v.
2. Frequency is the number of wavelengths that pass a point in 1 sec. So you have 100 passing in 5 seconds. How many will pass in 1 sec?
To find the velocity of the wave, we can use the formula:
Velocity = Wavelength x Frequency.
Given that the wavelength is 2 meters and the frequency is 6 Hz, we can substitute these values into the formula:
Velocity = 2 meters x 6 Hz = 12 meters per second.
So, the velocity of the wave is 12 m/s.
To determine the frequency of the wave in the second question, we can use the formula:
Frequency = Number of Wavelengths / Time.
Given that 100 wavelengths pass every 5 seconds, we can substitute these values into the formula:
Frequency = 100 wavelengths / 5 seconds = 20 Hz.
Therefore, the frequency of the wave is 20 Hz.