An extension cord made of two wires of diameter 0.129 cmcm (no. 16 copper wire) and of length 2.7 mm (9 ftft ) is connected to a
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Answer:
The height of the water column = 1.62405 × 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 m
∴ L = 0.6496 m/4 = 0.162405
m
The height of the water column = 1.62405 × 10⁻¹ m.
Answer:
The magnitude of the angular acceleration is
Explanation:
From the question we are told that
The angular speed of CD is
time taken to decelerate is
The final angular speed is
The angular acceleration is mathematically represented as
substituting values
The negative sign show that the CD is decelerating but the magnitude is