Mechanics
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Difference Between Electric Potential and Electric Potential Energy
The basic difference between electric potential and electric potential energy is that Electric potential at a point in an electric field is the amount of work done to bring the unit positive charge from infinity to that point, while electric…
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Archimedes principle and buoyant force
Archimedes’ principle states that when an object is totally or partially immersed in a liquid, an upthrust acts on it equal to the weight of the liquid it displaces. Boats and ships floating on the surface of the water are…
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Continuity equation derivation in fluid mechanics with applications
General Concept of Fluid Flow One way of describing the motion of a fluid is to divide the fluid into infinitesimal volume elements, which we may call fluid particles, and to follow the motion of each particle. If we knew…
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Find angle between two vectors
The angle between two vectors is referred to as a single point, known as the shortest angle by which we have to move around one of the two given vectors towards the position of co-directional with another vector. It is…
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How Atmospheric pressure is measured?
Atmospheric pressure formula is the weight of air per unit area. Its value varies with altitude. The value of atmospheric pressure at sea level is 1.013 x105 N/m2 Atmospheric Pressure formula Atmospheric pressure is measured by the following formula: Atmospheric…
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Types of Mechanical Waves
Mechanical waves are the types of waves that required no medium for their propagation. There are two types of mechanical waves, transverse waves, and longitudinal waves. Sound waves, water waves, and spring waves are examples of mechanical waves. Types of…
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Newton’s Second Law of motion: Definition, Formula & Exaamples
Newton’s second law of motion states that the rate of change of momentum of a body is directly proportional to the applied force. According to Newton’s first law of motion “if no net force is acting on a body at…
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What is SI Unit of density in Physics?
Density and mass are two physical quantities. Mass is the quantity of matter of an object while density is mass per unit volume. They are two different quantities but these quantities have relationships with each other, higher will be the…
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Derivation of First Equation of Motion in Physics
The first equation of motion (Vf =Vi + at) deals with final velocity, initial velocity, acceleration, and time. We can use the 1st equation of motion to find final velocity, initial velocity, acceleration, and time. First equation of motion derivation…
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Mass of earth and radius in physics
The planet earth has an approximate mass of 6 × 10 24 kg , or what is the same: 6000 trillion tons. This amount is used in space science (astrophysics and astronomy) as a unit of mass to calculate how heavy other planets are compared to ours. Earth is the…