You have a reusable drinking straw that is cm long. You submerge most of the straw in a bucket of water, then cover the top with your thumb, and then carefully remove the straw from the bucket, holding it vercally. You find that there is a column of fluid that remains inside the straw. Suppose that the column of water trapped in the straw extends from the cm mark to the cm mark with distances measured from the boTTom of the straw What is the pressure of the trapped air at the top of the straw?