Please help solve Problem 11.1 Part D

| Harris County Publ... SALE- Not Your Ave... KPRC 2 Community... HISTOLOGY GUIDE > > All Bookmarks Learning Goal: Submit Previous Answers To practice Problem-Solving Strategy 11.1 Energy efficiency problems. Suppose that you have left a 200-mL cup of coffee Correct sitting until it has cooled to 30 C , which you find totally unacceptable. Your microwave oven draws 1100 W of electrical power when it is running. If it takes 45 s for this microwave oven to raise the Assess temperature of the coffee to 60 C , what is the efficiency of heating with this oven? Determine whether your answer agrees with your experience. Part D The oven draws 1100 W of power, and you have determined that it heats with an efficiency of 51%. Using this information, determine the time t it would take to bring 240 mL of water from 250 C to 100 C . Note that 4.2 J of energy is required to raise the temperature of 1.0 mL of water by 1.0 C (the same as for the coffee above). Express your answer in seconds to two significant figures. View Available Hint(s) AEd ? t = S