Answer: option A is correct
Explanation:
This is a constructive interference by the two sources responsible for the pattern that is why they appear to be single source.
Answer:0.27*10^{6} (m)
Explanation:
with a wave we know that speed= wavelenght* frecuency so
wavelenght= 3*10^{7} / 109 = 0.27*10^{6} (m)
Its either releasing a stretch rubber band and a ball rolling down a hill because rubber have a potential to move when its stretch and its an eleastic potential energy also a ball rolling down a hill is a gravitational to kinetic energy because the ball started at rest which is art the top of the hill and it has a potential to fall. Once its started rolling its energy transfer into kinetic energy.
Hope this helps
Answer:
A
Explanation: ACCORDING TO LAW OF REFLECTION ANGLE OF INCIDENCE WITH NORMAL TO SURFACE MUST BE EQUAL TO ANGLE OF REFLECTION WITH NORMAL TO SURFACE