Electrical device Power [W]" Mobile phone charger Attached to phone, phone charging 3.68 Plugged into wall outlet but not into phone 0.26 Notebook computer AC adapter Attached to computer, computer charging 44.28 Attached to computer, computer sleeping 15.77 Attached to computer, computer off 8.9 Plugged into wall outlet but not into computer 4.42 DVD player On and playing 9.91 On and not playing 7.54 Off 1.55 Microwave oven Ready with door closed 3.08 Ready with door open 25.79 Cooking 1433.0 Inkjet multifunction printer On 9.16 5.26 Table 10.3 Full Altemative Text

1. a) Use the values in Table 10.3 to calculate the number of kilowatthours
consumed in one month by a notebook computer AC adapter
if every day the computer is charging for 5 hours and sleeping for
19 hours..
2. b) Repeat the calculation in part (a) assuming that the computer is
charging for 5 hours and off for 19 hours.
3. c) Repeat the calculation in part (a) assuming that the computer is
charging for 5 hours and disconnected from the AC adapter for 19
hours, but the AC adapter remains plugged into the wall outlet.
4. d) Repeat the calculation in part (a) assuming that the computer is
charging for 5 hours and the AC adapter is unplugged from the wall
outlet for 19 hours.