how do i do this please help i'm going to die if i don't get this turned in at 11:59 i'm crying please help me

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. t or f

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.