A 4.5 Kw electric motor is 90% efficient.How much energy it use in 20 seconds? A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power inp...
Anew commentary, published inJouleby members of the Energy Demand Changes Induced by Technological and Social Innovations (EDITS) network, coordinated by the International Institute for Applied Systems Analysis (IIASA), highlights that switching the focus from how energy is supplied to how energy is c...
Before we dive into the power consumption of TVs, it’s essential to understand the unit used to measure electrical power – Watts. One watt is equivalent to one joule per second, representing the rate at which energy is consumed or produced. In other words, it’s a measure of how much ...
Kinetic energy is a subset of energy types alongside the potential energy. For kinetic energy in particular, this defines the amount of energy that objects in motion have. Since the kinetic energy is dependent on the speed of the object as it moves, stationary objects do no...
Energy is measured in Joule (j). The energy of one Joule in one second = one Watt (W). We use energy to produce work. When we do, a part of the original energy is transformed into thermal energy. We call that energy loss and the amount of that loss defines the efficiency of a ...
The conversion of joules (j) to moles (mol) commonly is calculated when measuring the energy changes during chemical reactions. A joule is a measure of energy; a mole is a measure of mass. If a chemical reaction produces a certain amount of energy, you can figure out how many moles of...
To boil one liter of water, we will need approximately 330 Joules of energy. If you boil ordinary tap water, it will take a bit more energy, around 360 Joules. The average formula is 4.186 Joule/Gram °C (J/g∙°C). It is even bigger than iron because water has a special role ...
The capacity of an object for doing work is termed as energy. The energy of an object can be in the form of kinetic energy, potential energy, thermal energy, internal energy, chemical energy, electrical energy, nuclear energy, and so on....
In theory, the potential energy your body gains as you climb is exactly the same as the food energy it loses: one form of energy is simply converted into another. (In practice, you need to use more energy than you might think because your body wastes quite a lot of energy in the ...
Power consumption in circuits is defined as how much energy is delivered per unit of time. The units for power is watts. In DC circuits, power...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...