Uwill get answer it brainliest will be awarded for →calculate the pressure exerted by a body having a mass of 30kg over an area of contact 400cm2.also explain it for every step there should be

Explanation:

mass of the body=30kg

area on which it is exerting pressure=400 cm2 to m2

=4m2

pressure it exerts=?

the formula for finding pressur in physics is F/A where the mass of the body is the force implied while area is taken as area

therefore:pressure=F/A

=30/4

=7.5 kgm/s2

=

7500 N/m²

Explanation:

The formula for finding pressure = force/area

force = 30 kg we convert this to newtons.this is because pressure is in N/m²

30 x 10 = 300N

Area = 400cm² we convert to m² = 400/10000 = 0.04

pressure = force/ area

 pressure   = 300/0.04 = 7500 N/m²

If you need any more explanation pls do mention in the comment section so that i can help more.

Hope this helps and if it does mark as branliest answer thx

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement