you throw a ball with a mass of 2.1 kg. The balls leave your hand at 30 m/s the ball has enrgy. Calculate it

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

What does the symbol (–hfus) indicate in a phase change?

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action