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

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.