A student stands 120 m from a large

PHYSICS · Subjective · CBSE · Physics · Sound · Sound

Problem

A student stands 120 m from a large, flat wall and produces a single sharp clap. Temperature (°C)  Speed of sound (m/s) 0        331 20       343 Calculate, in milliseconds, how much sooner the echo returns at 20 °C than at 0 °C.

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