The quotient of (wavelength) divided by (wave period) is equal to (wave speed).
just analyze it in this way:
20cos30*=10( radical 3 )
20sin30*=10
Answer:
W = 4832
Explanation:
Given:
Force = 62.8 Kg
Distance = 76.8 m
Find :
work done = ?
Formula :
W = Fd
Solution:
W =(62.8 kg)(76.8 m)
= 4832 J
