Physics
Explain Elasticity: Stress and Strain
From our general knowledge, we know a rubber tape elongates along its length when it is pulled. As soon as the tape is released of…
Introduction to Physics
Physics
Explain Pascal’s Law
If the pressure is applied on any point of an enclosed liquid or gas it is transmitted in all directions. Pascal stated a law about…
Physics
Explain Floatation and Immersion of a Body
Floatation and Immersion this two forces act simultaneously on a body when it is released in a liquid at rest. The weight of the body,…
Physics
What is Magnitude of Buoyancy?
Every point of a body immersed in a fluid will experience thrust in all directions. Let a cylinder PQRS is of cross-sectional area A and…
Physics
Explain Pressure of a Fluid and Buoyancy
A fluid is a substance which flows or is capable of flowing. Fluids are of two types -liquids and gases. Pressure of a fluid: The…
Physics
Mathematical Example: Pressure
Question: A vessel contains kerosene. Find the magnitude of pressure at a point 75 cm deep from the surface of kerosene. [Density of kerosene is…
Physics
Pressure at a Point in a Liquid at Equilibrium
Pressure at a point in a liquid means a force exerted perpendicularly by the liquid on unit area around that point in the liquid. In…
Physics
Explain Change in Atmospheric Pressure and Weather
With the change of time, the atmospheric pressure of a certain place also changes. The variation of water vapor in the air is the cause…
Physics
Explain Torricelli’s Experiment and Measure of Atmospheric Pressure
Take a glass tube about one meter long opened at one end having uniform diameter. Fill the whole tube with pure mercury. Close the open…
Physics
What is Atmospheric Pressure?
This earth is surrounded by air. Atmosphere has weight. So it has pressure. This very pressure on earth surface is almost 105 N per square…
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