here's the first part but for the 2nd one all I know is that the word "compression" goes on the spirals that are closer together.
hope this helps!
Answer:
λ = 1360 m
Explanation:
Given data:
frequency of driving nails is given as 1 stroke per second mean at every 0.25 sec she hit the nails
speed of sound is given as 340 m/s
we know that the wave equation is given as
Speed = frequency × wavelength,
v = f × λ
where,
v = speed in meters/second (m/s)
f = frequency in Hertz (Hz)
substituing value to get wavelength of her driving nails
![340 m/s = (1Hz)\times \lambda](https://tex.z-dn.net/?f=340%20m%2Fs%20%3D%20%281Hz%29%5Ctimes%20%20%5Clambda)
![\lambda = \frac{340}{0.25}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7B340%7D%7B0.25%7D)
λ = 1360 m