What distance does sound cover in one microsecond if its speed is 1.54 mm/µs?

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Prepare for the Ultrasound Physics Test. Access flashcards and multiple-choice questions, each with hints and explanations. Get set for your exam day!

Multiple Choice

What distance does sound cover in one microsecond if its speed is 1.54 mm/µs?

Explanation:
Sound travels distance equal to speed times time. With a speed of 1.54 mm per microsecond, in one microsecond the distance is 1.54 mm × 1 µs = 1.54 mm. The microsecond units cancel, leaving millimeters. This mirrors the common ultrasound reference that sound in soft tissue moves about 1.54 mm every microsecond (≈1540 m/s). If time were different, the distance would scale accordingly (for example, 2 µs would be 3.08 mm).

Sound travels distance equal to speed times time. With a speed of 1.54 mm per microsecond, in one microsecond the distance is 1.54 mm × 1 µs = 1.54 mm. The microsecond units cancel, leaving millimeters. This mirrors the common ultrasound reference that sound in soft tissue moves about 1.54 mm every microsecond (≈1540 m/s). If time were different, the distance would scale accordingly (for example, 2 µs would be 3.08 mm).

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