External heat.
When using a hairdryer, unwanted energy in the form of heat and noise is released. The heat energy is necessary for drying the hair, but excessive heat can lead to damage. The noise energy is produced by the internal fan and motor of the hairdryer.
The heat a ball gives from the friction when someone kicks it
Gasoline is used for the energy to power a car.
According to the laws of physics, energy cannot be either created or destroyed. So almost all energy comes from another form of energy. i.e. the brakes on your car change kinetic energy(movement) into heat energy and the car slows down. Energy only changes from one 'type' to another.
Mechanical energy is not produced in a toy car. Instead, the toy car converts potential energy (stored energy) into kinetic energy (energy of motion) as it moves. The mechanical energy in the toy car comes from the energy used to make it move, not from being produced within the toy itself.
In most energy conversions, part of the energy will be converted to heat. That is usually unwanted, since energy is wasted, and the heat itself may also be problematic.
The energy needed to start a car comes from the battery. The battery supplies electrical energy to the starter motor, which then cranks the engine to begin the combustion process. Once the engine is running, it generates its own power to keep the car operating.
Yes, a car has kinetic energy when it is in motion. Kinetic energy is the energy an object possesses due to its velocity, and it is calculated using the formula ( KE = \frac{1}{2} mv^2 ), where ( m ) is the mass of the car and ( v ) is its velocity. As the car speeds up, its kinetic energy increases, and when it comes to a stop, its kinetic energy decreases to zero.
The unwanted form of energy in the transformation for a lamp is typically heat energy. This is because a portion of the electrical energy used to power the lamp is converted into heat energy instead of light energy, resulting in energy loss and inefficiency.
Two types of unwanted energy are waste heat, generated as a byproduct of many industrial processes, and noise pollution, which is unwanted sound that can disrupt environments and cause harm to human health and wildlife.
when a car drive up a hill it gains potential energy and when it comes down the hill it gains kinetic energy.
Yes, unwanted forms of energy such as waste heat, noise, and air pollution are often produced during the transformation of energy from one form to another. These forms of energy are typically considered as losses in energy systems and can have negative impacts on the environment and human health. Reducing these unwanted forms of energy is a key goal in improving the efficiency and sustainability of energy transformation processes.