Nuclear energy is energy that is stored in the core of a certain type of atom. Atoms are the smallest units of matter and they make up everything in our universe. Energy is what causes the core of an atom to stay together and inside the core, there is vast amounts of energy.
Answer:
The frequency of the beats is 43.6408 kHz
Explanation:
Given:
f = frequency = 39.6 kHz
vc = speed of the car = 35 m/s
vs = speed of the sound = 343 m/s
Question: What is the frequency of the beats, f' = ?
As the car moves towards the source, the frequency of the beats

= (3,760 joule/sec) / (4,000 joule/sec)
= 3,760 / 4,000 = 0.94 = 94%