A person produces two sound waves with a flute one immediately after the other. Both sound waves have the same pitch, but the second one is louder. Which of the following properties is greater for the second sound wave?
A) Frequency
B) Amplitude
C) Wavelength
D) Speed in air

1

Answers

2014-10-21T17:52:00+08:00
I THINK it's   letter A                
1 5 1