Question

DEFINE PRESSURE AND ITS SI UNIT . DERIVE THE EXPRESSION FOR PRESSURE .

Answer 1

Answer:

Pressure—the effect of a force applied to a surface—is a derived unit, obtained from combining base units. The unit of pressure in the SI system is the pascal (Pa), defined as a force of one Newton per square meter. The conversion between atm, Pa, and torr is as follows: 1 atm = 101325 Pa = 760 torr.

Explanation:

Answer 2

Answer:

Pressure is defined as force per unit area

S.I unit of pressure is Pascal

pressure = force/ area

pressure= N / m²

where N is Newton and m² is metre square