Question

Answer

(b) At one time during the flight the temperature inside the plane is 17°C.
The temperature outside the plane is -43 °C.
Work out the difference between the inside and outside temperatures.
Answer
(c) The plane leaves London where the temperature outside is 17°C.
The plane rises to a height where the temperature outside is -43 °C.
The temperature decreases by 2°C with every increase of 300 m in height.
Calculate the increase in height of the plane.

Answer 1

(b) The difference between the inside and outside temperatures of the plane is:

17−(−43)=60

Therefore, the difference between the inside and outside temperatures of the plane is 60°C.

© The temperature decreases by 2°C with every increase of 300 m in height. Therefore, the temperature decreases by 1°C with every increase of 150 m in height.

The temperature difference between London and the plane’s cruising altitude is:

17−(−43)=60

To decrease the temperature by 60°C, we need to increase the height by:

60×150=9000 m

Therefore, the increase in height of the plane is 9000 meters.

I hope that helps!