velocity is equal to frequency times wavelength. You have velocity and frequency given so wl = v/f. The wavelength is 3/5m, or 6cm.
You can't calculate the wavelength from only that information. The speed, wavelength, and frequency of a wave are related. In order to calculate any of them, the other two must be known.
Convert the wavelength to meters. Then simply multiply the frequency by the wavelength. The answer will be in meters/second.
If you multiply the wavelength (in meters) and the frequency (in Hertz), you will get the speed of the wave (in meters per second).
The speed of a wave is equal to the product of its wavelength and its frequency. (If you want to have the speed in meters/second, convert the wavelength to meters first.)
The equation to use in this case is:speed (of the wave) = wavelength x frequency If the frequency is in hertz, and the wavelength is in meters, the speed will be in meters/second.
Just use the relationship: speed (of the wave) = frequency x wavelength. If the frequency is in hertz (cycles/second), and the wavelength in meters, then of course the speed will be in meters/second.
2 Hz
The speed of any wave is the product of wavelength x frequency. In this case, because of the units chosen (meters, and hertz, which is equal to 1/second), the speed will come out in meters/second.
Wavelength = speed/frequency = 30/10 = 3 meters
The speed of the wave is 4x3= 12 meters/second.
Frequency = (speed)/(wavelength) = 20/2 = 10 Hz
For an electromagnetic wave the velocity of the wave is 300Mm/s.