As the velocity of the sound source approaches the speed of sound, the wave fronts ahead of the object begin to appear as:

a-separately distinguishable waves

b-a single wave front
c-cylindrical
d-a cone shape shockwave.
Term 1

and when the velocity of the sound source exceeds the speed of sound, the wave fronts form:

Term 2

a-separately distinguishable waves

b-a single wave front
c-cylindrical
d-a cone shape shockwave.

The correct answer is D

shock waves

Explanation:

When a body approaches the speed of sound in the media, the waves it emits are getting closer and closer to each other, the envelope (sum) results in a kind of cylindrical cone that is similar to that formed in a supersonic process

The correct answer is D

When the speed of sound is exceeded, the body goes faster than the wave, so the so-called shock waves are formed.

  They carry a lot of energy

1= 26.17

2= 1.17

3=30.86

4=5.86

just took the assigment on edge

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation: