On a warm summer day (30 C), it takes 4.80 s for an echo to return from a cliff across a lake. On a winter day, it takes 5.20 s. The speed of sound in air is (331+0.607) m/s, where T' is the temperature in °C. What is the temperature on the winter day? Express your answer to two significant figures and include the appropriate units ΨΗ ΑΣΦ ?

A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).

A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vib…

People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules th…