Time period of a pendulum is given by the formula, T= 2pi * sqrt(l/g)
So if the length is increased by 44% i.e l’= 1.44l
The new time period, T’=2pi *sqrt(1.44l/g) = 2pi *1.2 * sqrt(l/g)
So the new time period is 1.2 times of the old one or you can say it increased by 20%.
The answer would be D, when the plastic strip and cloth are rubbed together there is a transfer of electrons from the plastic strip to the cloth leaving the plastic strip positively charged as it lost electrons, while the cloth becomes negatively charged.
yea some data is shown what is the question dude