GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the unit of measurement for energy?
A
Newton (N)
B
m/s
C
Joule (J)
D
Work (W)
Explanation: 

Detailed explanation-1: -The SI unit for work and energy commonly used in drawing is the joule (J), which is equivalent to a force of one newton exerted through a distance of one meter (m). Work in the UK/US system is often expressed as foot-pounds (ft-lb), with one foot-pound equal to 1.3558 J.

Detailed explanation-2: -The joule (symbol J) is the SI unit of energy-a measure of the capacity to do work or generate heat. One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m).

Detailed explanation-3: -joule, unit of work or energy in the International System of Units (SI); it is equal to the work done by a force of one newton acting through one metre. Named in honour of the English physicist James Prescott Joule, it equals 107 ergs, or approximately 0.7377 foot-pounds.

Detailed explanation-4: -1 Joule [J] = 1 Watt-second [Ws] = 1 V A s = 1 N m = 1 kg m2s−2.

Detailed explanation-5: -Basic Units. Joule (J). This is the basic energy unit of the metric system, or in a later more comprehensive formulation, the International System of Units (SI). It is ultimately defined in terms of the meter, kilogram, and second.

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