You are standing at position X. Click on the diagram that shows your position when you perceive a sound at the same frequency as actually being produced by the siren.

A. https://media.glynlyon.com/g_ipc_2012/10/u9_l140_q6a.gif

B. https://media.glynlyon.com/g_ipc_2012/10/u9_l140_q6b.gif

C. https://media.glynlyon.com/g_ipc_2012/10/u9_l140_q6d.gif

Question

You are standing at position X. Click on the diagram that shows your position when you perceive a sound at the same frequency as actually being produced by the siren.

A. https://media.glynlyon.com/g_ipc_2012/10/u9_l140_q6a.gif

B. https://media.glynlyon.com/g_ipc_2012/10/u9_l140_q6b.gif

C. https://media.glynlyon.com/g_ipc_2012/10/u9_l140_q6d.gif

anonymous · Answer

A shock wave first forms when an object _____ the speed of sound.

approaches
reaches
exceeds

sidsiddhartha · Answer

first one is A
A shock wave first forms when an object exceeds the speed of sound.

anonymous · Answer

u are such a help :D

sidsiddhartha · Answer

sorry the first one will be C beacuse you perceive a sound at the same frequency i did'nt noticed that

anonymous · Answer

ok :)