Question

A Sound wave has a frequency of 2 K Hz and
Wavelength 40cm. Calcute its Speed ?​

Answer 1

Answer:

the answer is 800 m/s

Explanation:

frequency = 2 kilo hertz= 2000hertz

wavelength = 40 cm = 0.4m

Now,

Speed = frequency * wavelength

= 2000 * 0.4

= 800 m/s

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Answer 2

$frequency = 2000 \: hz \\ wavelength = 40cm \\ speed = 2000 \times 40 \div 100 \\ 2000 \times 0.4 = 800$

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