Find the force (in magnitude - angle form) affected on an object of mass 5kg if its acceleration is given by a = 3i -4j.

Why do electron microscopes have higher resolving power than light microscopes?

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

Language is not the only way that humans communicate. describe how we use sound, touch, chemicals, and sight to communicate. need answer asap