NTSE physics question Find at what temperature, the velocity of sound in air is 1.5 times the velocity at 700 C (a) 357°C (b) 387°C (c) 350°C (d) 290°C Please explain! Thanks
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velocity at T°/velocity at 70° = (331.3+0.6T)/(331.3+0.6*70)
1.5 = (331.3+0.6T)/(331.3+42)
1.5 = (331.3+0.6T)/373.3
331.3+0.6T = 1.5*373.3 = 560
0.6T = 560-331.3 = 228.7
T = 228.7/0.6 = 381
Answer is B
1.5 = (331.3+0.6T)/(331.3+42)
1.5 = (331.3+0.6T)/373.3
331.3+0.6T = 1.5*373.3 = 560
0.6T = 560-331.3 = 228.7
T = 228.7/0.6 = 381
Answer is B
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