Sun-earth-moon in a straight line. Earth in the 'middle'.
The beach boys i think.. if not im sorry
The answer is to increase energy. Hope this helps!
Answer:
The truck's speed is 4.04 m/s.
Explanation:
Given that,
Emit frequency = 600 Hz
Beat = 7.00 beat/sec
We need to calculate the truck's speed
Using formula of speed

Where, v = speed of sound
Put the value into the formula



Hence, The truck's speed is 4.04 m/s.