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A 1 Watt device consumes 1 Joule of energy every 1 second. If you multiply the number of watts by the number of seconds, you’ll end up with joules. To find out how much energy a 60W light bulb consumes in 120 seconds, simply multiply (60 watts) x (120 seconds) = 7200 Joules.Joule is the SI unit of work done. Therefore, the dimensional formula of Joule is the same as that of the work done. Since, Work done (W) = Force × Displacement . . . . ( 1) And, Force = Mass × acceleration = M1 × [M0 L T–2]So if 1 watt = 1 joule per second, it therefore follows that: 1 Joule of energy = 1 watt over one unit of time, that is: Work equals Power multiplied by Time, (V*I*t joules). So electrical energy (the work done) is obtained by multiplying power by the time in seconds that the charge (in the form of a current) flows.
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What is the formula for a joule?
Joule is the SI unit of work done. Therefore, the dimensional formula of Joule is the same as that of the work done. Since, Work done (W) = Force × Displacement . . . . ( 1) And, Force = Mass × acceleration = M1 × [M0 L T–2]
How do you calculate joules in electricity?
So if 1 watt = 1 joule per second, it therefore follows that: 1 Joule of energy = 1 watt over one unit of time, that is: Work equals Power multiplied by Time, (V*I*t joules). So electrical energy (the work done) is obtained by multiplying power by the time in seconds that the charge (in the form of a current) flows.
What is a Joule? An Explanation
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What is the energy in joules?
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.
How do you find joules from mass and velocity?
In classical mechanics, kinetic energy (KE) is equal to half of an object’s mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2.
How do I calculate energy?
Energy = Power x Time.
The unit of energy is the joule, the unit of power is the watt, and the unit of time is the second. If we know the power in watts of an appliance and how many seconds it is used we can calculate the number of joules of electrical energy which have been converted to sortie other form.
How to use the Joules Formula [remake]
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How do you find joules from Watts and time?
Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s.
See some more details on the topic How do you find the joules? here:
How to Calculate Joules – Sciencing
You can calculate joules by calculating the kinetic energy, or energy of motion, of an object. You can also calculate the joules by calculating …
How to calculate Joules – Quora
There are a number of very useful formulas for working out joules. Here is a quick reference list. We will go through each of them below.
Joule Calculator
How to calculate joules? ; First, measure the mass of the object. Using a scale or formula, determine the mass of the object. ; Next, measure the …
How to Calculate Joules? – ePub Zone
This is the most basic formula for a joule. Basically, you can work out how many joules are being exerted by multiplying power by time. A watt …
How many Newtons are in a joule?
One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m).
How do you calculate force physics?
Force exerted by an object equals mass times acceleration of that object: F = m * a .
How do you convert joules to Newtons?
One joule is equal to how many newtons? 1 joule is equal to 1 newton meter. The ratio of joules to newton meters is 1:1. If you need to convert any number from joules to newtons, all you have to do is multiply it by 1.
What Is Joules Used for in Science Terms? : Measurements Other Math Calculations
Images related to the topicWhat Is Joules Used for in Science Terms? : Measurements Other Math Calculations
Is joule unit of energy?
1 Units. The SI unit for energy is the joule (J): 1 J=1 newton metre (N m). Another unit is the calorie (cal), which is defined as the heat required to raise the temperature of 1 g of pure water by 1°C at 1 atm pressure.
What is the formula for energy change?
To calculate an energy change for a reaction: add together the bond energies for all the bonds in the reactants – this is the ‘energy in’ add together the bond energies for all the bonds in the products – this is the ‘energy out’ energy change = energy in – energy out.
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