A plane coming in to land at a busy airport is asked to circle the airport until the air traffic congestion eases off. The pilot
keeps the plane at the approved altitude and in a circle of constant radius of 1.99 ✕ 104 m. If the speed of the plane is 185 m/s (around 414 mph), at what angle are the plane's wings banked from the horizontal? Note that the lift force on the wings is always perpendicular to the wings. (Give an angle between 0 and 90 degrees.)
1 answer:
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Complete question:
The exit nozzle in a jet engine receives air at 1200 K, 150 kPa with negligible kinetic energy. The exit pressure is 80 kPa, and the process is reversible and adiabatic. Use constant specific heat at 300 K to find the exit velocity.
Answer:
The exit velocity is 629.41 m/s
Explanation:
Given;
initial temperature, T₁ = 1200K
initial pressure, P₁ = 150 kPa
final pressure, P₂ = 80 kPa
specific heat at 300 K, Cp = 1004 J/kgK
k = 1.4
Calculate final temperature;
k = 1.4
Work done is given as;
inlet velocity is negligible;
Therefore, the exit velocity is 629.41 m/s
Answer:
"332.8 m/s" is the right solution.
Explanation:
The given values are:
Wavelength,
Frequency,
As we know,
⇒
or,
⇒
By putting the given values in the above relation, we get
⇒
⇒