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nikdorinn [45]
3 years ago
10

Which of the following objects conducts heat the best?

Physics
1 answer:
Ivanshal [37]3 years ago
6 0
A metal spoon is the best conductor, but a hot air balloon would conduct more heat than a metal spoon.
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R = 4,000 ohms

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Two truckers are traveling directly away from each other at the same speed. If one trucker sounds her horn at a frequency of 221
8_murik_8 [283]

Answer:

v = 8.8 m /s

Explanation:

For listener and source going away from each other the formula of Doppler effect is as follows

\frac{f}{f_0} = \frac{V-v}{V+v}

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V = 343 , v = ? ,f = 210 , f₀ = 221

Put these value in the relation above

[tex]\frac{210}{221} = \frac{343-v}{343+v}[/tex]

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