The answer is
Pitch of the buzzer increased (higher tone) as it moves towards the observer
Answer:
I dont know someone deleted answers. But they were wrong. INERTIA IS CORRECT I DID THIS IN MY SCHOOL
C IS CORRECT
Gain in decibels is given by;
Gain db = 10*log (Po/Pi), where Po = Power output, Pin = Power input
Substituting;
Gain in db = 10 * log (50/5) = 10 db
It is correct, the action is paddling, where you move the water backwards, and the reaction is the boat moving forwards.
