How do you calculate energy used?
How to calculate my energy consumptionDevice Wattage (watts) x Hours Used Per Day = Watt-hours (Wh) per Day.Device Usage (Wh) / 1000 (Wh/kWh) = Device Usage in kWh.Daily Usage (kWh) x 30 (Days) = Approximate Monthly Usage (kWh/Month).
What is joule energy?
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.
What is energy measured in?
JouleThe official measurement unit for energy is the Joule (J). Among the most common units measuring energy mention should be made of the kilowatt/hour (kWh), used especially for electric energy (in fact it is used to calculate electricity bills).
What is the total energy of the earth?
A planet also has rotational kinetic energy that is not included. The energy E is the amount of energy that would be required to remove a planet from our solar system. The notation (nE+m) stands for n×10m….V = −GMm/R.The Energies of the Planets (joules)Earth-5.29201E+332.66762E+33-2.62439E+338 more columns
What is the total energy in the system or body?
2.10. The total mechanical energy E of a particle is defined as the sum of the kinetic and potential energies.
Is work an energy?
Work and energy Work is closely related to energy. The work-energy principle states that an increase in the kinetic energy of a rigid body is caused by an equal amount of positive work done on the body by the resultant force acting on that body.
How do you find energy in joules?
Multiply watts by seconds to get joules. 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.