An electrical power of 2 kW is supplied to a television for a time of 7 h. The price of electricity is 0.13 pounds per kilowatt - hour. What is the cost of powering the television to the nearest penny?
A person travels from the first floor of a building to the second floor using an electric elevator. Elevator A is supplied with greater electrical power than elevator B. Which elevator would take less time to travel up one floor?
Which of the following is the correct formula for power?