When the speed of a moving object doubles, its kinetic energy quadruples. Kinetic energy is directly proportional to the square of the velocity according to the kinetic energy formula. Therefore, when the speed doubles, the kinetic energy increases by a ...
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The drawn bow does not have kinetic energy. Kinetic energy is the energy possessed by an object due to its motion. While the other options involve objects in motion—fired bullet, flowing water, and moving hammer—the drawn bow is not in ...
Found in a substance like a rubber mattress when its shape changes, stored energy refers to the potential energy stored within the material due to deformation. This stored energy enables the material to return to its original shape once the ...
Electrical energy is produced by converting solar energy using photovoltaic cells. Photovoltaic cells directly convert sunlight into electricity through the photovoltaic effect. When sunlight hits the cells, it excites electrons, generating a flow of electricity.
Dynamo converts mechanical energy into electrical energy. Rotating coils within a magnetic field induce an electromotive force, generating electrical current. This process is based on electromagnetic induction.