Answer:
I think true..... :))))))))))
Answer:
A joule equals the amount of work done on an object when a force <u>of</u><u> </u><u>1</u><u> </u><u>Newton</u><u> </u> displaces that object <u>1</u><u> </u><u>metre</u>
Answer:
Matter
Explanation:
Any type of material is a matter. It can be anything that occupies space and have mass. It is a composition of atoms which in term is made up of electrons, protons and neutrons. All particles in our universe is matter because everything has some mass and it occupies space.
Answer: Option C) Warm air is less dense than cold air
Explanation:
Due to greater temperature of warm air than cold air, the space between intermediate molecules is more as compared to cold air. It means the warm air expands. Hence, the density of warm air is less than cold air. On the other hand, the cold air comparatively denser and sinks. Warm air is lighter and rises.
Thus, correct option is C) Warm air is less dense than cold air.
Answer:
It is the third-lightest halogen, and is a fuming red-brownliquid at room temperature that evaporates readily to form a similarly coloured gas. Its properties are thus intermediate between those of chlorine and iodine. .