20/5 = 4 seconds
Wavelength = (speed) / (frequency) = (340) / (20,000) = 0.017 meter = 1.7 centimeter
Frequency = (speed)/(wavelength) = 20/2 = 10 Hz
speed = distance over time = wavelength times frequency = 2 m times 10 hz = 20 m hz = 20 meters per second.
Wavelength = (speed) divided by (frequency) = 10/0.5 = 20
The period is 4 [insert units here]. To get to this answer you use the equation v= λ*ƒ which basically means velocity is equal to lambda (wavelength) times frequency. Next you insert the speed where velocity is then you insert the wavelength and try to find the frequency. Once you get the frequency which should be 1/4 Hz then you use the proportion: period ~ 1/frequency and then you know that the period is 4.
If a wave is traveling at 5 meters per second (assuming that is what the question meant) and its wavelength is 20 meters, consider standing beside the wave and watching it pass. As the wave is 20 meters long and it is moving at 5 meters per second, it will take 4 seconds for the full cycle of the wave to pass an observer. That means its frequency is one cycle per 4 seconds. And - surprise! - that's the period of the wave. The period of the wave is 4 seconds.
The period of a wave is the time it takes for one complete cycle to pass a point. It is the reciprocal of the frequency. Therefore, a wave with a frequency of 20 Hz would have a period of 0.05 seconds (1/20 = 0.05). The wavelength of 2.0 m is unrelated to the period in this case.
40 Hz
Wavelength = (speed) / (frequency) = (340) / (20,000) = 0.017 meter = 1.7 centimeter
The speed of a wave is equal to the product of wavelength x frequency. Just convert everything to standard units (wavelength to meters, frequency to hertz), multiply both, and you'll get the result, also in standard units (meters / second).
Frequency = (speed)/(wavelength) = 20/2 = 10 Hz
Frequency = (speed)/(wavelength) = 10/20 = 1/2
The speed of the wave can be calculated using the formula speed = frequency x wavelength. In this case, the frequency is 5.0 waves per second and the distance between wave peaks (wavelength) is 20 cm. Therefore, the speed of the wave is 5.0 waves/s x 20 cm = 100 cm/s.
The velocity of a wave can be calculated using the formula: velocity = frequency * wavelength. Plugging in the values, the velocity of the wave would be 1000 meters per second.
The speed of the wave can be calculated using the formula: speed = wavelength / period. In this case, the speed of the wave is 10 meters / 20 seconds = 0.5 meters per second.
10 feet
speed = distance over time = wavelength times frequency = 2 m times 10 hz = 20 m hz = 20 meters per second.