How is electromagnetic waves useful for cooking food

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units