Martha wakes up at 5:30 a. m. and eats a bowl of corn flakes. It's a nice day, so she decides to ride her bicycle to work, which is uphill from her house. It is still dark outside. Martha's bike has a small electric generator that runs from the front wheel. She flips on the generator so that her headlight comes on when she starts to pedal. She then rides her bike to work. Draw a diagram that shows the energy transformations that occur in this situation.