The unit of force newton is a derived unit. Why?

What can be found in the ionosphere

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products