If someone could write me two paragraphs explaining this that would be amazing I am struggling to understand the question

Two identical 82 mg dust particles very far apart (pee 0) are moving directly toward each other at a speed of 3698 m/s. the charge on each is-719 ? c. determine how close they will get to each other. let k = 9x109 n-m2/c2 & ignore gravity.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

More solar radiation is absorbed by earth’s surface than by