A dryer uses 4200 W and operates for 2.50 hours in one day, how much energy is used?

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

Define dew point. i am writing this part to be able to ask the question

State one important difference between a physical change and a chemical change?