It is good to know the different types of energy.Conservation of energy is must for the betterment of the future generation. Reckless use of energy and natural resources today will lead to scarcity for the future.
A NUCLEAR FISSION IS USED IN POWER PLANTS TO PRODUCE ELECTRICITY...ENERGY CAN BE CONVERTED FROM ONE FORM TO ANOTHER....IT CAN NOT BE CREATED OR DESTROYED...AS IT IS THE ABILITY TO DO WORK AND SO ON.....
thanks so much for this lesson i am enjoying this lesson
I want to know if in a cell phone electricity is converted to kinetic energy?
Energy = Work ------ Joule Power = Energy / Time (Rate of Energy) Watt = Joule / Sec. kWh is not a func of time kWh is Energy ont Power
Done but needs more consentration to understand the concepts.
Can energy be divided?
How do energy conserved and what are the units for energy?
what is the primary source of energy?
Conservation of Energy
Though energy can be converted from one form to another, energy cannot be created or destroyed. This principle is called the "law of conservation of energy." For example, in a motorcycle, the chemical potential energy of the fuel changes to kinetic energy. In a radio, electricity is converted into kinetic energy and wave energy (sound).
Machines can be used to convert energy from one form to another. Though ideal machines conserve the mechanical energy of a system, some of the energy always turns into heat when using a machine. For example, heat generated by friction is hard to collect and transform into another form of energy. In this situation, heat energy is usually considered unusable or lost.
In the International System of Units (IS), the unit of work or energy is the Joule (J). For very small amounts of energy, the erg (erg) is sometimes used. An erg is one ten millionth of a Joule:
1 Joule = 10,000,000 ergs
Power is the rate at which energy is used. The unit of power is the Watt (W), named after James Watt, who perfected the steam engine:
1 Watt = 1 Joule/second
Power is sometimes measured in horsepower (hp):
1 horsepower = 746 Watts
Electrical energy is generally expressed in kilowatt-hours (kWh):
Nous enverrons les instructions pour reinitialiser votre mot de passe à votre adresse e-mail associée. Veuillez marquer votre adresse e-mail actuelle.