What is Work ? A force must be applied for work to be completed, and there must also be motion or displacement in the force’s direction. The amount of force multiplied by the distance moved in the force’s direction is known as the work done by a force acting on an object. Work has no …
James Prescott Joule was an outstanding British physicist.He is best known for his research in electricity and thermodynamics.Amongst other things, he formulated a law for the heating effect of electric current. He also verified experimentally the law of conservation of energy and discovered the value of the mechanical equivalent of heat. The unit of energy …
Solution:Relative density of silver = 10.8 Relative density = Density of silver / Density of waterThe density of silver = Relative density of silver × density of water = 10.8 × 103 kg m–3 Ans.
, Definition The density of a substance is defined as mass of a unit volume. The unit of density is kilogram per metre cube (kg m–3).The density of a given substance, under specified conditions, remains the same.Therefore the density of a substance is one of its characteristic properties. It is different for different substances. For …
Archimedes was a Greek scientist. He discovered the principle, subsequently named after him, after noticing that the water in a bathtub overflowed when he stepped into it. He ran through the streets shouting “Eureka!”, which means “I have got it”. This knowledge helped him to determine the purity of the gold in the crown made …
Archimedes’ principle, stated as follows:“When a body is immersed fully or partially in a fluid, it experiences an upward force that is equal to the weight of the fluid displaced by it. “ The Archimedes law, which was developed by Archimedes of Syracuse in Greece, provides the thrust force value. When an object is submerged …
The force due to the gravitational attraction of the earth acts on the bottle in a downward direction. So the bottle is pulled downwards. But the water exerts an upward force on the bottle. Thus, the bottle is pushed upwards. We have learnt that the weight of an object is the force due to the …
All liquids and gases are fluids. A solid exerts pressure on a surface due to its weight. fluids have weight, and they also exert pressure on the base and walls of the container in which they are enclosed. Pressure exerted in any confined mass of fluid is transmitted undiminished in all directions. Calculation of fluid …
What is Thrust and Pressure ? A type of force that affects an object is thrust. There are numerous forces that an object may encounter. The effect of thrust per unit area on an object is known as pressure, and the force acting perpendicular to an object’s surface is known as thrust. An object will …
