She hears an echo after 0.6 s. Calculate the speed of sound in air. Speed = \(\frac{\text{distance}}{\text{time}}\). The sound travels 102 m to the wall and 102 m back to the girl, so the total ...

v \ = \frac{x}{t}\) \(v \ = 400 \div 1.2\) \(v \ = 333 \ m/s \ (3 \ sf)\) The accepted value for the speed of sound in air is 330 m/s. However, this experimental method is flawed as humans do not ...

Boom Supersonic's XB-1 hits a new speed milestone of 629 mph, bringing it closer to breaking the sound barrier—setting the ...