Answer:
The direction of the contact forces acting on a body is not necessarily perpendicular to the contact surface. The resolution of contact forces in two components i.e. perpendicular to contact surface and along surface. Perpendicular component is normal force and parallel component is friction.
Explanation:
The answer is c hope it helps
Answer:
The blade of sharpener is made up of iron. Iron is a magnetic material because of this pencil sharpener gets attracted by the poles of a magnet although the body is made up of plastic.
Atomic mass= number of protons + number of neutrons
hope this helps
Conductors allow<span> for </span>charge<span> transfer </span>through<span> the free movement of </span><span>electrons
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