compare the energy consumption of two commonly used items in the household. calculate the energy used by a 1.40 kw1.40 kw toaster oven, Wtoasterwtoaster , which is used for 6.80 minutes6.80 minutes , and then calculate the amount of energy that an 11.0 w11.0 w compact fluorescent light (cfl) bulb, Wlightwlight , uses when left on for 9.00 hours9.00 hours .