The speed of sound in relation to temperature

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The discussion revolves around calculating the temperature of dry air based on a speed of sound of 339 m/s using the formula v = 331 x (temp./273 + 1). A user initially struggled with the calculation for two hours but ultimately solved it before their lesson. They expressed gratitude for the community's willingness to help, despite not needing assistance in the end. The interaction highlights the importance of collaboration in problem-solving. The thread concludes with a positive note on the user's successful resolution of the question.
HalcyonStorm
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What is the temp. of dry air if the speed of sound is 339 m/s?
I have been using this formula: v = 331 x (temp./273 + 1)
I've tried for at least 2 hours and cannot get the answer. Please help me.
 
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Please show us some work so we can help you better.
 
Sorry for the late response guys, I was at school. I managed to figure it out before the lesson, I got it right :).
Thanks anyways.
 
Thread 'Correct statement about size of wire to produce larger extension'

Thread 'Correct statement about size of wire to produce larger extension'

The answer is (B) but I don't really understand why. Based on formula of Young Modulus: $$x=\frac{FL}{AE}$$ The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and ##L## and decrease ##A## I am not sure whether there is change in ##F## for first and second wire so I will just assume ##F## does not change. It leaves (B) and (C) as possible options so why is (C)...
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