a) If 79.2 Kj (79 200 J) of energy is transformed by a compact fluroesecent light (CFL) bulb in 1.0 h (3600 S), what is the power rating of the bulb?
b) When the total energy used by a CFL bulb is 300.0 Kj, 180.0 Kj of energy is not wasted. Using these measurements, calculate the efficiency and percent efficiency of the CFL bulb.