Question

How fast is a wave traveling if it has a wavelength of 7 meters and a frequency of 11 Hz?

Answer 1

`\huge{ \boxed{ \bold{ \sf{77 \: m/s}}}}`

☯ Question :

• How fast is a wave travelling if it has a wavelength of 7 meters and a frequency of 11 Hz?

☯
`\underbrace{ \sf{Required \: Answer : }}`

☥ Given :

• Wavelength ( λ ) = 7 meters
• Frequency ( f ) = 11 Hz

☥ To find :

• Speed of sound ( v ) = ?

☄ We know ,

`\boxed{ \sf{v = f * λ}}`

where ,

• v = speed of sound
• f = frequency
• λ = wavelength

Now, substitute the values and solve for v.

➺
`\sf{v = 11 * 7}`

➺
`\boxed{ \sf{v = 77 \: m/s}}`

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✑ Additional Info :

• Frequency : The number of complete vibrations made by a particle of a body in one second is called it's frequency. It is denoted by the letter f . The SI unit of frequency is hertz ( Hz ).

• Wavelength : The distance between two consecutive compressions or rarefactions of a sound wave is called wavelength of that wave. It is denoted by λ ( lambda ) and it's SI unit is m.

• Speed of a sound wave : The distance covered by a sound wave in one second is called speed of sound wave. It depends on the product of wavelength and frequency of the wave.

Hope I helped!

Have a wonderful time! ツ

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