A car horn has a frequency of 680 Hz and a wavelength of 50cm. Calculate the speed of the sound waves produced by the car horn:
velocity (v) = frequency of the wave (f) x wavelength of wave (in metres) (λ)
50cm in metres: 50/100 = 0.5m
Therefore (v) = 680 x 0.5= 340 (m/s)
GS
Related Physics GCSE answers
All answers ▸Using newtons laws explain how a falling object can reach terminal velocity (6)
Why is the sky blue?
A block of mass 5kg moving in a straight line at constant speed travels 50 metres in 14 seconds. Calculate the block's momentum.
A balloon's volume is 0.002m^3 at room temperature (20°C). What volume will the balloon occupy when it is cooled to -5°C? Give your answer to 3 significant figures.