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Nutka1998 [239]
3 years ago
11

Help!! I’ll give brainliest!! Which person will hear the highest pitch?

Physics
2 answers:
Ad libitum [116K]3 years ago
5 0
I believe person A will have the highest pitch
GarryVolchara [31]3 years ago
5 0
Person C will because the higher pitch is always moving towards the observer.
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6 0
2 years ago
Read 2 more answers
An old light bulb draws only 54.3 W, rather than its original 60.0 W, due to evaporative thinning of its filament. By what facto
Lemur [1.5K]

Answer:

The factor of the diameter is 0.95.

Explanation:

Given that,

Power of old light bulb = 54.3 W

Power = 60 W

We know that,

The resistance is inversely proportional to the diameter.

R\propto\dfrac{1}{D}

The power is inversely proportional to the resistance.

P\propto\dfrac{1}{R}

P\propto D^2

We need to calculate the factor of the diameter of the filament reduced

Using relation of power and diameter

\dfrac{P_{i}}{P_{f}}=\dfrac{D_{i}^2}{D_{f}^2}

Put the value into the formula

\dfrac{D_{i}^2}{D_{f}^2}=\dfrac{54.3}{60}

\dfrac{D_{i}}{D_{f}}=0.95

D_{i}=0.95 D_{f}

Hence, The factor of the diameter is 0.95.

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3 years ago
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