Ireally need some ; like it's an emergency! ! 50 points!

Speed = wavelength x frequency

so wavelength = 24/48 = 0.5 m

same thing: wavelength = 343/392 = 0.875m

it is longitudinal wave as wave travels in a direction parallel to the direction of energy


the fire engine compresses the sound waves in front of it as it approaches; causing the sound frequency to increase i.e. higher pitch

sound travels faster through solid so cowboys can hear enemies sooner

Wooden , walls ,doors ,support