Answer:
Option A
You need a Angle C congruent to angle F
Explanation:
EX) Side angle Side = sas
they are added vectorially. If htere is a resultant force, the thing acclerates. If they vectorially add to zero, thing doesn't move
The use of force to move an object is called work. This only applies if the object moves.
The frequency doesn't change. If the wavespeed increases, then the wavelength must also increase ... It's just the distance the wave travels during each complete wiggle.
