Martha is viewing a distant mountain with a telescope that has a 120-cm focal length objective lens and an eyepiece with a 2.0 cm focal length. She sees a bird that's 66 m distant and wants to observe it. To do so, she has to refocus the telescope.
Part A
By how far must she move the eyepiece in order to focus on the bird? Express your answer to two significant figures and include the appropriate units.