energy transformations

Energy transformation is the process of changing energy from one form to another, such as electrical energy to mechanical energy.

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Electrical energy is transformed into mechanical energy and then into sound energy.

The two energy transformations in photosynthesis are radiant energy (from sunlight) to chemical energy (in glucose).

In a lamp, electrical energy is transformed into thermal energy and then into light energy.

A moving bicycle is an example where mechanical energy (from pedaling) is transformed into kinetic energy (motion).

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Potential energy is the stored energy of an object due to its position or state, such as a ball held at a height.

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

In a hydroelectric power plant, potential energy of water is transformed into kinetic energy as it flows, which is then converted into electrical energy.