Question

1. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.30 m?

2. What is the wave speed of a wave that has a frequency of 50 Hz and a wavelength of 0.10 m?




3. What is the frequency of a wave that has a wave speed of 20 m/s and a wavelength of 0.50 m?




4. What is the frequency of a wave that has a wave speed of 80 m/s and a wavelength of 0.20 m?




5. What is the frequency of a wave that has a wave speed of 120 m/s and a wavelength of 0.40 m?




6. What is the wavelength of a sound wave that has a speed of 340 m/s and a frequency of 440 Hz?




7. What is the wavelength of a sound wave that has a speed of 340 m/s and a frequency of 880 Hz?




8. What is the wavelength of a sound wave that has a speed of 250 m/s and a frequency of 400 Hz?




9. What is the wave speed of a wave that has a frequency of 50 Hz and a wavelength of 2.0 m?




10. What is the wave speed of a wave that has a frequency of 100 Hz and a wavelength of 0.50 m?

please answer fast

Answer 1

1. 30 Hz
2. 5 Hz
3. 40 m/s
4. 400 m/s
5. .48 m/s
6. .77 m/s
7. .39 m/s
8. .625 m/s
9. 100 Hz
10. 50 Hz

Answer 2

For 1: The wave speed of the wave is 30 m/s

For 2: The wave speed of the wave is 5 m/s

For 3: The frequency of the wave is 40 Hz

For 4: The frequency of the wave is 400 Hz

For 5: The frequency of the wave is 300 Hz

For 6: The wavelength of the wave is 0.773 m

For 7: The wavelength of the wave is 0.386 m

For 8: The wavelength of the wave is 0.625 m

For 9: The wave speed of the wave is 100 m/s

For 10: The wave speed of the wave is 50 m/s

Explanation:

Wave speed is defined as the product of its wavelength and frequency.

Mathematically,

`\text{Wave speed}=\lambda* \\u`

where,

`\lambda` = wavelength of the wave

`\\u` = frequency of the wave

• For 1:

We are given:

`\lambda =0.30m\\\\\\u=100Hz`

Putting values in above equation, we get:

`\text{Wave speed}=0.30* 100=30m/s`

Hence, the wave speed of the wave is 30 m/s

• For 2:

We are given:

`\lambda =0.10m\\\\\\u=50Hz`

Putting values in above equation, we get:

`\text{Wave speed}=0.10* 50=5m/s`

Hence, the wave speed of the wave is 5 m/s

• For 3:

We are given:

`\lambda =0.50m\\\\\text{Wave speed}=20m/s`

Putting values in above equation, we get:

`20/s=0.50m* \\u\\\\\\u=(20)/(0.50)=40s^(-1)`

Hence, the frequency of the wave is 40 Hz

• For 4:

We are given:

`\lambda =0.20m\\\\\text{Wave speed}=80m/s`

Putting values in above equation, we get:

`80/s=0.20m* \\u\\\\\\u=(80)/(0.20)=400s^(-1)`

Hence, the frequency of the wave is 400 Hz

• For 5:

We are given:

`\lambda =0.40m\\\\\text{Wave speed}=120m/s`

Putting values in above equation, we get:

`80/s=0.20m* \\u\\\\\\u=(120)/(0.40)=300s^(-1)`

Hence, the frequency of the wave is 300 Hz

• For 6:

We are given:

`\\u =440Hz\\\\\text{Wave speed}=340m/s`

Putting values in above equation, we get:

`340/s=\lambda* 440\\\\\lambda=(340)/(440)=0.773m`

Hence, the wavelength of the wave is 0.773 m

• For 7:

We are given:

`\\u =880Hz\\\\\text{Wave speed}=340m/s`

Putting values in above equation, we get:

`340/s=\lambda* 880\\\\\lambda=(340)/(880)=0.386m`

Hence, the wavelength of the wave is 0.386 m

• For 8:

We are given:

`\\u =400Hz\\\\\text{Wave speed}=250m/s`

Putting values in above equation, we get:

`250/s=\lambda* 400\\\\\lambda=(250)/(400)=0.625m`

Hence, the wavelength of the wave is 0.625 m

• For 9:

We are given:

`\lambda =2.0m\\\\\\u=50Hz`

Putting values in above equation, we get:

`\text{Wave speed}=2.0* 50=100m/s`

Hence, the wave speed of the wave is 100 m/s

• For 10:

We are given:

`\lambda =0.50m\\\\\\u=100Hz`

Putting values in above equation, we get:

`\text{Wave speed}=0.50* 100=50m/s`

Hence, the wave speed of the wave is 50 m/s