What is the decimal form of 1.873x 10^-3

Air enters the diffuser of a jet engine operating at steady state at 18 kPa, 216 K and a velocity of 265 m/s, all data correspon

earnstyle [38]

Answer:

45.44m/s

Explanation:

To solve this problem it is necessary to go back to the concepts related to the first law of thermodynamics,

in which it deepens on the conservation of the Energy.

The first law of Thermodynamics is given by the equation:

$0 = \dot{Q}-\dot{W}+\dot{m}(h_1-h_2)+\dot{m}(\frac{V_1^2-V^2_2}{2})+\dot{m}g(z_1-z_2)$

Where,

$\dot{Q}=$ Heat transfer

$\dot{W} =$ Work

$\dot{m} =$ Flow mass

$V_i =$ Velocity

$h_i =$ Specific Enthalpy

$g =$ Gravity

$z_i =$ Height

From this equation we have that there is not Heat transfer, Work and changes in Height. Then,

Then our equation would be,

$0=\dot{m}(h_1-h_2)+\dot{m}(\frac{V_1^2-V^2_2}{2})$

Solving for $V_2,$

$V_2 = \sqrt{V_1^2+2(h_1-h_2)}$

From the tables of ideal gas (air) at 216K we have,

$h_1 = 209.97+(219.97-209.97)(\frac{216-210}{220-210})$

$h_1 = 215.97kJ/kg$

From the tables at 250K, we have that

$h_2 = 250.05kJ/kg$

The velocity was previously given, then

$V_1 =265m/s$

Replacing in the equation:

$V_2 = \sqrt{265^2+2(215.97-250.05)*10^3}$

$V_2 = 45.44m/s$

Therefore the velocity of the air at the diffuser exit is 45.44m/s

3 0

4 years ago

The New Horizons probe that passed by Pluto during July 2015 is one of the fastest spacecraft ever assembled. It was moving at a

LenKa [72]

Answer:

2.91 x 10¹² sec

Explanation:

d = distance of nearest star, Proxima Centauri = 4.3 ly = 4.3 x 9.46 x 10¹⁵ m

v = speed of new horizon probe = 14 km/hr = 14000 m/s

t = time taken for the new horizon probe to reach nearest star, Proxima Centauri = ?

Using the equation

d = v t

Inserting the values given

4.3 x 9.46 x 10¹⁵ = (14000) t

t = 2.91 x 10¹² sec

7 0

3 years ago

The drag on an object depends on several variables. The most important of them, to understand the experiments you carried out is

ankoles [38]

Drag;

Drag is the aerodynamic force that opposes an aircraft's motion through the air. Drag is generated by every part of the airplane (even the engines!). How is drag generated? Drag is a mechanical force. It is generated by the interaction and contact of a solid body with a fluid (liquid or gas).

The drag on an object depends on several variables. The most important of them, to understand the experiments you carried out is the area of the object.

The area of the object is the most important factor to understand the experiments.

Learn more about Drag on:

https://brainly.in/question/13010660

#SPJ4

7 0

2 years ago

What did young's observation of an interference pattern for light show about the nature of light? A. light consists of particles

Darina [25.2K]

Light behaves as waves. This is deducted from the light and dark spots on display

5 0

4 years ago

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