A machine makes work easier by
A. Multiplying the force exerted
B. Maintaining the distance over which the force is exerted
C. Adding the forces exerted
D. Dividing the force exerted

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder