Advertisements
Advertisements
Question
Find the pressure 200m below the surface of the ocean if pressure on the free surface of liquid is one atmosphere. (Density of seawater = 1060 kg/m3)
Advertisements
Solution
Given:
h = 200m,
ρ = 1060 kg/m³,
P0 = 1.013 × 105
Pa, g = 9.8 m/s²
To find:
Presssure 200m below the surface
Solution:
Absolute pressure, P = P0 + hρg
= (1.013 x 105) + (200 x 1060) x (9.8)
= (1.013 × 105) + (20.776 × 105)
= 21.789 × 105
= 2.1789 MPa
APPEARS IN
RELATED QUESTIONS
Explain why Hydrostatic pressure is a scalar quantity even though the pressure is force divided by area.
A 50 kg girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter 1.0 cm. What is the pressure exerted by the heel on the horizontal floor?
Water in a lake exerts pressure only at its bottom.
The unit of thrust is ..........
Pressure is reduced if .................... increases.
The unit of thrust is
The unit of pressure is
The feet of lizards act like
When does a man exert more pressure on the floor: while standing or while walking?
It is easier to cut with a sharp knife than with a blunt one. Explain.
A gum bottle rests on its base. If it is placed upside down, how does the thrust change?
The base of a container measures 15 cm × 20 cm. It is placed on a table top. If the weight of the container is 60 N, what is the pressure exerted by the container on the table top?
A boy weighing 60 kgf stands on platform of dimensions 2.5 cm x 0.5 cm. What pressure in pascal does he exert?
In a pressure cooker, the food is cooked faster because ______.
It is difficult to cut cloth using a pair of scissors with blunt blades. Explain.
If the same force is made to act on a larger area, the pressure ______.
At higher altitudes, atmospheric pressure is ______.
Analogy
Broader straps: ______:: Thin needles: ______.
Assertion: The pressure at the bottom of the sea is lesser than that near the surface.
Reason: The pressure exerted by a liquid depends upon the depth of the liquid and density of the liquid.
Why dams are made stronger and thicker at the bottom than at the top?
Give reasons why:
a single nail pricking the body is painful when compared to lying on a bed of nails.
In petrol bunks, in what unit is tire pressure measured?
Intermolecular forces are stronger in ______.
The net force in a particular direction is called ______.
The pressure in mines is ______ than the sea level.
What is the SI unit of pressure?
