3. An airplane is flying at 10 km altitude in the standard atmosphere. The internal pressure of the aircraft interior is 100 kPa. Estimate the outward force on the window. The window is flat and has an elliptical shape with lengths of 300 mm along the major axis and 200 mm along the minor axis.

The correct response will be "13.755 kN".

Explanation:

According to the question,

The given values are:

a = 300 mm

i.e.,

  = 0.3 cm

b = 200 mm

i.e.,

  = 0.2 dm

Internal pressure,

Now,

The area of the elliptical shape window will be:

⇒  

On substituting the values, we get

⇒      

⇒      

By using the table,

At 10 km, the atmospheric pressure will be

⇒  

Now,

The outward force will be:

⇒  

⇒          

⇒          

⇒          

this means that the temperature of both substances will be equal

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.