The wave length becomes shorter and the pitch becomes higher
(2m west) + (3m south) + (4m east) + (1m north) =
[ (2m west)+(4m east) ] + [ (3m south)+(1m north) ] =
[ (-2m east)+(4m east) ] + [ (3m south)-(1m south) ] =
(2m east) + (2m south)
Now, so far, we have the orthogonal (perpendicular) components of the displacement ... the North/South component and the East/West component.
To combine these, it's time for Pythagoras:
Displacement = √[ (2m)² + (2m)² ]
Displacement = √ (4m² + 4m²)
Diplacement = √8m²
<em>Displacement = 2.83 meters Southeast</em>
The answer is <span>The power will decrease to 75 percent of its previous value
</span>
Answer:
Option 3
Explanation:
As the roots of the plant hold soil in place, it helps prevent soil erosion.
The other options are true, but they are not correct explanations as to why plants help prevent erosion.
