Question

The frequency of a fork is 500 Hz. Velocity of sound in

air is 350ms ¹. The distance through which sound travels
by the time the fork makes 125 vibrations is
1) 87.5 m
2) 700m
3) 1400m
4) 1.75m

Answer 1

1)

Step-by-step explanation:

Because ,...

Answer 2

1) 87.5 m

Step-by-step explanation:

Given:

• Frequency of fork, f = 500 Hz
• Velocity of sound in air, v = 350 m/s
• Number of vibrations, n = 125

To find:

• wavelength λ
• Distance traveled by sound,

Formula:

`\tt λ ={ v }{f}`

`\tt d = n * λ`

Calculations:

`\tt λ = (350 )/( 500) = 0.7 m`

`\tt d = 125 * 0.7 = 87.5 m`

Therefore, the distance traveled by the sound is 87.5 m