7. A note has a wavelength of 0.5840 m. If the speed of sound is 343.00 m/s, what pitch is this note? 8. A note has a wavelength of 0.4375 m. If the speed of sound is 343.00 m/s, what pitch is this note? 9. An E note has a frequency of 659.26 Hz. Calculate its wavelength in meters. 10. A G note has a frequency of 783.99 Hz. Calculate its wavelength in meters.

7. Pitch = 587.33 m

8. Pitch = 784 m

9. Wavelength = 0.5203 m

10. Wavelength = 0.4375 m

Explanation:

In sound, pitch is also known as frequency. And formula for frequency is;

f = speed/wavelength

Thus, pitch = speed/wavelength

7. We are given;

wavelength = 0.5840 m

speed of sound = 343.00 m/s

Pitch = 343/0.5840

Pitch = 587.33 m

8. We are given;

wavelength = 0.4375 m

Speed of sound = 343.00 m/s

Pitch = 343/0.4375

Pitch = 784 m

9) Frequency = 659.26 Hz

Speed of sound remains 343 m/s

Earlier we saw that;

Frequency = speed/wavelength

Thus,

Wavelength = speed/frequency

Wavelength = 343/659.26

Wavelength = 0.5203 m

10) Frequency = 783.99 Hz

Speed of sound remains 343 m/s

Wavelength = speed/frequency

Wavelength = 343/783.99

Wavelength = 0.4375 m

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more