3 example of metalliods

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?

Radioisotopes often emit alpha particles, beta particles, or gamma rays. the distance they travel through matter increases in order from alpha to gamma. each radioisotope has a characteristic half-life, which is the time needed for half of a sample of radioisotope to undergo nuclear decay. which quality is desirable for a radioisotope that is used for medical imaging of a specific organ? check all that apply. half-life of several years half-life of several days half-life of several seconds emission of gamma rays emission of alpha particles ability to be attached to a compound used by the body ability to pass through the body without being absorbed

Unpolarized light is incident upon two polarization filters that do not have their transmission axes aligned. if 32 % of the light passes through this combination of filters, what is the angle between the transmission axes of the filters?