Friction is the force that acts on the opposite side of direction of force, thus it manages to decelerate an object, so it acts upward along the plane
Answer:
Gravitational tugs from orbiting planets don't affect the motion of a star. The star, being much larger than the planet, has a much smaller orbit. But it does move slightly. Explain how alien astronomers could deduce the existence of planets in our solar system by observing the Sun's motion.
Trimming the mold of and putting it on a weight scale
The full valence shell means that they do not react in chemical bonding.
The main purposes of chemical bonding is to obtain a stable structure.
Since the valence shell is stable,there is no need for chemical bonding since the whole atom is stable.
