How many nodes, not including the endpoints, are in a standing wave three wavelengths long? How many nodes are in a standing wave four wavelengths long?
Solution 37E Step 1: Figure 1 represents a wave. The letter “N” represents nodes in the wave. Step 2: For a wave having three wavelength, it will be having three full cycles as per figure 2 So, we can see, there will be 7 nodes for a three wavelength wave.