Solar energy is a form of renewable energy that is harnessed using the technology of the photovoltaic cells. These cells are composed of semiconductors. When the light from the sun hits the semiconductor, the energy from the light particles, or photons, cause the electrons in the semiconductor to be 'excited'. When the electron moves across the semiconductor platforms, the electron flows, thus creating electricity.
Therefore, as much as possible, you want to capture all of the sun's light. This can be achieved when the Sun is high up the sky. But if there is low sun angle, then the concentration of the sun's energy that strike the PV cells would be lesser.
because there small elemts like atoms but bigger than atoms we all know that
Answer:
The value is 
Explanation:
From the question we are told that
The mass of the child is 
The angular velocity is 
The distance from the center is 
Generally the centripetal force is mathematically represented as
=> 
=>
