What happens to energy when frequency is reduced by one half?
Energy is doubled
Energy is squared
Energy is halved
Energy remains constant

Energy is halved.

Explanation:

Energy and Frequency are directly proportional. If frequency decreases, energy increases. If frequency increases, energy increases. If frequency is halved, energy is also halved.

describe matter a earth

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.