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katovenus [111]
3 years ago
9

A 1.2 L weather balloon on the ground has a temperature of 25°C and is at atmospheric pressure (1.0 atm). When it rises to an el

evation where the pressure is 0.77 atm, then the new volume is 1.8 L. What is the temperature (in °C) of the air at this elevation?
Physics
1 answer:
Irina-Kira [14]3 years ago
4 0

Answer:

71.19 C

Explanation:

25C = 25 + 273 = 298 K

Applying the ideal gas equation we have

\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}

where P, V and T are the pressure, volume and temperature of the gas at 1st and 2nd stage, respectively. We can solve for the temperature and the 2nd stage:

T_2 = T_1\frac{P_2V_2}{P_1V_1} = 298\frac{0.77*1.8}{1.2*1} = 298*1.155 = 344.19 K = 344.19 - 273 = 71.19 C

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Answer:

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Explanation:

Area of square = 35square units

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So,

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2 years ago
car travels 80 meters due north in 12 seconds then the car turns around and travels 30 Mi do South in 4 seconds calculate the av
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Answer:

1) 3.1 m/s

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3 years ago
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3 years ago
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Pitch is the sensation of certain frequencies to the ear. High frequency = high pitch, low frequency = low pitch. 

f = c(speed of the wave) /  <span>λ (wavelength)

1. 343m/s / 0.77955m = 439.99 Hz   
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2. 343m/s / 0.52028m = 659.26 Hz
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4. using f = c /  λ
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3 years ago
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postnew [5]
<h2><em>178.57</em></h2>

<h2><em>=</em><em> </em><em>178</em><em>.</em><em>6</em></h2>

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