The picture below shows a warm air mass caught between two cooler air masses, what is this type of front called?

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

Complete the following reactions using word and balanced equations including states. dilute phosphoric acid is added with a calcium hydroxide solution.

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?