Answer:
C. A change has occurred in the nucleus.
Explanation:
Answer:
Friction force always acts tangent to the surface at points of contact. Friction force acts opposite to the direction of motion. There are 2 types of friction: Static friction: If the two surfaces in contact do not move relative to each other, one has static friction.
Answer:
E.two angles are vertical angles if, and only if they are not adjacent angles
