Question

Write the working principle of the following.
a) Insecticide spray pumps
b) Wings of an aeroplane​

Answer 1

Answer:

insecticide spray pumps - Spray pumps are commonly used in household gardens, to spray insecticide or water evenly on plants. Such spray pumps work on the basis of pressure differential and range from handy size to those which can be strapped on to the back. ... This creates high pressure within the container

wings of an aeroplane - According to a principle of aerodynamics called Bernoulli's law, fast-moving air is at lower pressure than slow-moving air, so the pressure above the wing is lower than the pressure below, and this creates the lift that powers the plane upward.

Answer 2

Answer:

wings of aeroplanes

Explanation:

because wings of aeroplanes helps to fly