Final answer:
The round trip time in soft tissue for an echo from a reflector at a depth of 1 cm is approximately 13 microseconds.
Step-by-step explanation:
The round trip time in soft tissue for an echo from a reflector at a depth of 1 cm can be calculated using the formula:
Round Trip Time = 2 * Depth / Speed of Sound
For soft tissue, the speed of sound is approximately 1540 m/s. Therefore, the round trip time can be calculated as:
Round Trip Time = 2 * 0.01 m / 1540 m/s
Round Trip Time = 0.000013 s or 13 microseconds