Answer:
upward lift on an aircraft wing decreases as it gains altitude.
Explanation:
- The lift on an airplane wing is generated due to the the difference in the pressure on the top of the wing and the bottom of the wing in accordance with the Bernoulli's Principle.
- The pressure on the lower part of the wing is higher due to the low velocity stream of air than on the upper part of the wing.
The governing equation of the Bernoulli's Principle is:
![\frac{P}{\rho.g} +\frac{v^2}{2g} +z=constant](https://tex.z-dn.net/?f=%5Cfrac%7BP%7D%7B%5Crho.g%7D%20%2B%5Cfrac%7Bv%5E2%7D%7B2g%7D%20%2Bz%3Dconstant)
where:
P = pressure of the fluid
g = acceleration due to gravity
density of fluid
v = velocity of the fluid
z = height of fluid from the datum
<u>But the lift force on the wings depends upon several aerodynamic factors given mathematically as:</u>
![L=cl. \rho.A.\frac{v^2}{2}](https://tex.z-dn.net/?f=L%3Dcl.%20%5Crho.A.%5Cfrac%7Bv%5E2%7D%7B2%7D)
where:
cl = experimental constant
density of air
A = area of wing
v = velocity of the air
As we move up in the atmosphere the density of air reduces and thus the force of lift will eventually decrease, that is the reason why airplanes have a flight ceiling, an altitude above which it cannot fly.
Answer:
i think it's 50 N
i might be wrong though not sure
Answer:
0.187 m
Explanation:
We'll begin by calculating the acceleration of the ball. This can be obtained as follow:
Mass (m) = 0.450 Kg
Force (F) = 38 N
Acceleration (a) =?
F = m × a
38 = 0.450 × a
Divide both side by 0.450
a = 38 / 0.450
a = 84.44 m/s²
Finally, we shall determine the distance. This can be obtained as follow:
Initial velocity (u) = 2.20 m/s.
Final velocity (v) = 6 m/s
Acceleration (a) = 84.44 m/s²
Distance (s) =?
v² = u² + 2as
6² = 2.2² + (2 × 84.44 × s)
36 = 4.4 + 168.88s
Collect like terms
36 – 4.84 = 168.88s
31.52 = 168.88s
Divide both side by 168.88
s = 31.52 / 168.88
s = 0.187 m
Thus, the distance is 0.187 m
Zero latitude gets the most direct sun all year around. That's the equator.
The picture you attached has nothing to do with this question.
The answer is probably going to be b or d. hope that helped