Frequency = 1 / (2π√LC)
Frequency = 1 / (2π · 2.8 x 10⁻⁴ · C)
Frequency = 1 / (1.759 x 10⁻³ · C)
<em>Frequency = (568.4 / C) Hz.</em>
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Energy stored in a capacitor = 1/2 C V²
Energy = 1/2 C · 2.25 x 10⁴
<em>Energy = (11,250 · C) Joules</em>
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Neither of the answers can be completely specified without knowing the value of the capacitor.
Answer:
36,67 degrees Celsius
Explanation:
The simplest way to approach this problem, given the information provided, is to simply start with the speed difference.
Goal: 353 m/s
Start: 343 m/s (at 20 degrees Celsius).
Difference: 10 m/s
Variation rate: 0.60 m/s/d (d = degree)

So, 16,67 degrees more than the starting point.
The temperature will then be 36.67 degrees Celsius, when the sound travels at the speed of 353 m/s.
What a fan does is create a wind chill effect. ... By blowing air around, the fan makes it easier for the air to evaporate sweat from your skin, which is how you eliminate body heat. The more evaporation, the cooler you feel.