a 10m ladder with a mass of 15kg leans against a wall if the ladder is in static equilibrium what must be the normal force from the ground assuming the wall is frictionless 73.5n 30n 147n 15n

what is the statement?

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101