D. rates of soil erosion are much lower during droughts that last several years
I'm stuck on the same question, as well :(
Frequency = velocity/wavelength
Frequency = 10/20
Frequency = 0.5 Hz
It's equals to zero (a=0)
As an object falls in response to gravitational force, its velocity increases
and its acceleration is unchanged. On Earth, its acceleration is 9.8 m/s².