Question

Need help pls. It is for acellus

Answer 1

Answer:

0.058

Explanation:

got it right on acellus

Answer 2

Answer:

The height of the water column = 1.62405$\overline{30}$ × 10⁻¹ m

Explanation:

The air cavity in the Coke bottle = 0.220 m deep

The fundamental (frequency) it plays when water is added to shorten the column and it is blown across the top, f = 528 Hz

The given speed of sound in air, v = 343 m/s

We note that the air cavity in the coke bottle is equivalent to a tube closed at one end

The fundamental frequency for a tube closed at one end, 'f', is given as follows;

f = v/(4·L) = v/λ

Where;

L = The height of the water column

λ = The wavelength of the wave

∴ 4·L = v/f = (343 m/s)/(528 Hz) = 0.6496$\overline{21}$ m

∴ L = 0.6496$\overline{21}$ m/4 = 0.162405$\overline{30}$ m

The height of the water column = 1.62405$\overline{30}$ × 10⁻¹ m.