Question

A source generates 40 waves in a second. If the wavelength is 8.5cm, calculate the time taken to reach a wall 102m from the source​

Answer 1

To calculate the time taken to reach the wall, we need to find the speed of the wave first. We can do this by multiplying the frequency (40 waves/second) by the wavelength (8.5cm).

Speed = 40 waves/second * 8.5cm

Next, we need to convert the wavelength to meters by dividing by 100:

Speed = 40 waves/second * 0.085m/wave

Now we can calculate the time taken to reach the wall by dividing the distance (102m) by the speed:

Time = 102m / Speed