Air pressure may be represented as a function of height above the surface ofthe Earth as shown below.P(h) = P.e-.000121In this function, Pois air pressure at sea level, and his measured in meters.Which of the following equations will find the height at which air pressure is85% of the air pressure at sea level?
Accepted Solution
A:
Answer:The height is 1343.13 meters.Step-by-step explanation:Air pressure may be represented as a function of height h in meters above the surface of Earth as shown below :
[tex]P(h) = P. e^{-0.000121h}[/tex] ......... (1)
In this function, P is air pressure at sea level and h is measured in meters.
Let at a height of h meters the pressure is 85% of the sea level pressure. Hence, from equation (1), we get
[tex]0.85 = e^{- 0.000121 h}[/tex]
Taking ln both sides, we can write
ln 0.85 = -0.000121 h (ln e) {Since [tex]\ln a^{b} = b \ln a[/tex]}
⇒ h = 1343.13 meters (Answer)