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pinklavalamp
11.05.2021 •
Mathematics
Summer Job!
Earn $150/week
Plus $2.75 per subscription sold
Let: T = Total weekly earnings
N = Number of subscriptions sold
Choose the equation that models weekly earnings for the summer job
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Ответ:
So E is the correct answer
Ответ:
The value of pressure at an altitude of 10000 ft = 10![\frac{lb}{in^{2} }](/tpl/images/0571/0041/e50f3.png)
Step-by-step explanation:
Given data
Atmospheric pressure
= 14.7 ![\frac{lb}{in^{2} }](/tpl/images/0571/0041/e50f3.png)
Pressure at 4000 ft = 12.6![\frac{lb}{in^{2} }](/tpl/images/0571/0041/e50f3.png)
If temperature is constant then the atmospheric pressure is varies with the altitude according to law
P (h) =![P_{0}](/tpl/images/0571/0041/24305.png)
------ (1)
where k= constant & h = height
12.6 = 14.7![e^{- 4000k}](/tpl/images/0571/0041/61b5f.png)
0.857 =![e^{- 4000k}](/tpl/images/0571/0041/61b5f.png)
㏑ 0.857 = - 4000 k
-0.154 = - 4000 k
k = 3.85 ×![10^{-5}](/tpl/images/0571/0041/6c5fa.png)
Thus the atmospheric pressure at an altitude of 10,000 ft is
Product of k & h is
k h = 3.85 ×
× 10000
k h = 0.385
Put his value of k h = 0.385 in equation (2) we get
This is the value of pressure at an altitude of 10000 ft.