If the period of a simple pendulum is T and you increase its length so that it is 4 times longer, what will the new period be?

T' = 2T

Explanation:

The time period of a simple pendulum is given by the relation as follows :

l is length of the pendulum

g is acceleration due to gravity

If the length is increased four time, new length is l' = 4l

So,

New time period is :

So, the new time period is 2 times of the initial time period.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m