1.) A popular way to measure the distance to lightning is to start counting, one count per second as soon as you see the flash. Stop counting when you hear the thunder and divide by five to get the distance in miles (this means that 5 seconds corresponds to a distance of 1 mile). Use this information to estimate the speed of sound in m/s. Distance We know from lecture that: Velocity = %3D Time and in the case of the lighting/thunder example that: Distance = 1ime 5. Combining these two equations we get a value for the speed of sound: Time 3-,milese = 0.2 miles Velocity = %3D %3D Time second 7second Use the conversion of 1 mile = 1609 m to find an answer for the speed of sound. %3D

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