50 BRAINLEST

A ball is dropped from the top of a building. The gravitational force is 10 N down, and the force of air resistance is 1 N up. What is the net force?

9 N up
9 N down
11 N up
11 N down

Calculate the number of molecules present in 0.750 mol of mgo.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Stage in which a typical star has completely stopped fusion