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Dec 28, 2020 · The definition of work in physics is force times displacement. It is a scalar produced by two vectors. The angle between the force and the displacement is also factored in. Work has units of energy called joules in SI units. The work-energy theorem relates kinetic energy to net work in a system.
We know that electric current is the result of the flow of electrons. The work done in moving the electron stream is known as electrical energy. Electrical energy can be converted into other forms of energy such as heat energy, light energy, etc. For example, in an iron box, electric energy is converted to heat energy.
The first mechanical refrigerators had to be connected to the sewer system to dispose of the refrigerant on a regular basis. In the 1930s and 1940s the halocarbon refrigerants (commonly known by such trade names as "Freon," "Genetron," "Isotron," etc.) were developed, giving the industry a strong push into the household market because of their suitability for use with small horsepower motors.
Power is defined as the rate at which work is done upon an object. Power is a time-based quantity. Which is related to how fast a job is done. The formula for power is mentioned below. Power = Work / time. P = W / t.
Nov 21, 2023 · Work in physics is quantitative and has a precise definition; it determines the amount of energy transferred when an object is displaced by an external force. It has a value with an actual meaning ...
The maximum work is done by a given force when it is along the direction of the displacement (cos θ = ± 1 cos θ = ± 1), and zero work is done when the force is perpendicular to the displacement (cos θ = 0 cos θ = 0). The units of work are units of force multiplied by units of length, which in the SI system is newtons times meters, N · m ...
Oct 30, 2023 · The formula for work done can be expressed mathematically as the dot product of force and displacement as, Work = Force x Displacement. W = FdCosθ. F cosθ is the component of force (F) in the direction of displacement (d) of the system. It can be positive, negative or even zero on varying the value of angle θ.
