The velocity of sound in air is given by the equation V equals 20 square root 273+ T, where V is the velocity in meters per second and T is the temperature in degrees Celsius. a.) Find the temperature when the velocity of sound in air is 420 m/s. Round the answer to the nearest degree.
b.) Find the velocity of sound in meters per second when the temperature is 40°C. Round the answer to the nearest meter per second.