Which heating system is the best for Riverdale High School based on what we have learned so far about molecules and temperature? please help

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

The boiling point of liquids is very high what does it indicate

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity