3. Friction can NEVER occur when objects are touching/in contact.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law