The first statement is true because s<span>peed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed has nothing to do with direction. On the other hand, velocity is a vector quantity because direction is needed for this. </span>
It's a hazard symbol for irritant.
Answer:
upward (F=ma if f is up a is up)
Answer:
Acid Uses
Organic acids
Citric acid As a preservative for food As a flavouring agent
Ascorbic acid (also called vitamin C) In the treatment of bone marrow and scurvy diseases
Acetic acid Added to pickles to make them sour
Explanation:
Answer:most of the positively charge particles should be bounce back at a range of angles as they collide with the atoms in the foil; only a few should pass straight through the foil
Explanation:
