You want to describe the harmonic motion of a swing. you find out that it take 2 seconds for the swing to complete one cycle. what is the swing's period and frequency?

The 2 seconds that it takes tocomplete one full cycle
is the period of the motion ... 2 seconds .

The frequency is the reciprocal of the period . . . 1 / 2 seconds  = 0.5 Hz.

B) as the temperature increases, the kinetic energy of the particles increases.|-/

The modern-day generator works on the principle of electromagnetic induction discovered by michael faraday in 1831-32. faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field.