Question

(ii) The history of solar power, in an observation, didn’t share that.

(a) Bell labs reported the discovery of 4.5% efficient silicon solar cell.
(b) Hoffman Electronics achieve 14% efficient PV cells.
(c) OPEC energy crisis causes the US to re-examine the use of energy source.
(d) State tax credit resulted in rapid degradation of a new solar industry.
(iii) What does the phrase ‘going green’ signify?

Answer 1

Answer:

Bell labs reported the discovery of a 4.5% efficient silicon solar cell. Explanation:

Kinetic Energy: The energy that a body possesses under its motion is known as its Kinetic Energy. The most generic representation of Kinetic Energy is KE = (1/2)mv2, where m is the mass of the body and v is the velocity at which it travels. This representation changes a little in the case of rotational rigid bodies, although the form remains the same. Kinetic energy is a scalar quantity which means it just has a magnitude and no direction.

Potential Energy:  Potential energy is the energy possessed by a stationary body in a force field. A force field can take many types – gravitational, electric, magnetic, etc