Question

1. 110 pts) An explosion took place at point A (see the figure below). Three persons located at point IB C and D. Assuming the distances AB, earliest for hearing the sound? AC and AD are the same. What is the order from the last to [a] D, B and C [bl C, B and D (el C, D and BId] B, C and D lel D, C and B D Air Land Water nderground tunnel

Answer 1

To travel faster the sound the medium is required the medium like underground helps to travels sound waves faster than water and air.Therefore

Option A is the correct