BBC Radio 4 Longwave usually covers the greater parts of France, Germany, and Holland. Go to 198kHz.
They own sister companies such as BBC films, BBC radio 1extra and so on as well as digital channels BBC 3, BBC 4 which are designed to appeal to a different audience.
A lot. There is: BBC 1, BBC 2, BBC 3, BBC 4, BBC News, BBC Parliament, CBBC, Cbeebies, BBC Iplayer, BBC England, BBC Scotland, BBC Wales, BBC Northern Ireland, and BBC America There is BBC radio channels too: Radio 1, 1Xtra, Radio 2, Radio 3, Radio 4, Radio 5 live,5 live sports extra, 6 music, radio 7, Asian Network
Yes it is.
Yes.
The speed of a wave is the product of its frequency and its wavelength.
The longest possible wavelength of a standing wave on a string that is 2 m long would be twice the length of the string, which is 4 m. This occurs when there is only one antinode (half a wavelength) present on the string.
The formula to calculate the wavelength of a wave is: wavelength = speed / frequency. Therefore, the wavelength in this case is 4 meters (12 m/s / 3 Hz = 4 m).
1/4 wavelength IF the wave is sinusoidal.
Wave 4 has the lowest frequency as it has the longest wavelength among the four waves. Frequency and wavelength are inversely proportional, so the longer the wavelength, the lower the frequency.
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.
If I understand the question correctly, that's one-quarter of a full cycle, so it is 1/4 of the wavelength. The wavelength varies from wave to wave - and this has nothing to do whether the wave is transverse or longitudinal.
The speed of a wave is determined by the equation: speed = wavelength / period. Without knowing the wavelength, it is not possible to calculate the speed based solely on the wave period.
The wave speed can be calculated by multiplying the frequency by the wavelength. In this case, the wave speed would be 92.0 m/s (23.0 Hz x 4 m).
The speed of a wave can be calculated using the formula: speed = wavelength x frequency. In this case, the speed of the wave would be 32 cm/s (4 cm x 8 Hz).
BBC Radio 4 Longwave usually covers the greater parts of France, Germany, and Holland. Go to 198kHz.
The speed of the wave is equal to the frequency multiplied by the wavelength. Given that four wave crests pass a pole each second, the frequency is 4 Hz. If the wavelength is known, you can calculate the speed using the formula speed = frequency x wavelength.