It’s D. An enlargement (hope this helps!)
The answer is C. Potential energy
(I learned this in class recently)
Answer:
"*The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.
*The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.
*The reflected ray and the incident ray are on the opposite sides of the normal."
Explanation:
Answer is 1500 m/s
Wave speed = Frequency x wavelength
500.0 x 3.00 = 1500 m/s