What is the result of two materials rubbing against each other?
A. gravity
B. magnetism
C. force
D. friction
Ok

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean

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

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?