When will the moon not be illuminated 50%? during high and low tides

any time it is not a half moon

when it is waning

during a lunar eclipse

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.

Often called simply "velocity," this is the velocity of an object at a particular moment in time.

Which best describes what forms in nuclear fission? a. two smaller, more stable nucleib. two larger, less stable nucleic. one smaller, less stable nucleusd. one larger, more stable nucleus