This answer would be heat capacity
Answer:
Element Symbol # of Atoms
Iron Fe 2
Oxygen O 12
Sulfur S 3
Answer:
One is tension force that acts on the string and the other one is gravitational force that is acting on the pen and is therefore, the one that pulls the pen towards the ground. Therefore, the pen's motion is caused by the unbalanced force acting on the pen.
Their identified by the number of protons they have in the nucleus which = their electrons.
