University Physics II Class Today 11/3/2021
Here is the lecture for class today. On the last problem the annual usage for an iPhone every year is only 3.3 kWh instead of 361 kWh. This makes the iPhone have a battery life if 10.8 h roughly.
Power usage:
(3.3 x 1000 W h)/y (1 y)/(365 day) (1 day)/(24 h)
Battery life with an EMF of 1.5V (I am completely guessing on the EMF source):
(2.716 1.5)/0.3767123287671233=10.8 h