Assume we have a mechanical hard drive with the following characteristics:

number of surfaces - 2 (this is a double-sided disk, a single read/write arm holds both read write heads)
number of tracks per surface - 500
number of sectors per track - 20
number of bytes per sector - 1024

in general, information is stored on a disk not at random but in specific locations that to minimize the time it takes to retrieve that information. using the specifications above, where would you store the information in a 50 kb file on the disk to speed up subsequent access to that information.

8. create an abstract student class for parker university. the class contains fields for student id number, last name, and annual tuition. include a constructor that requires parameters for the id number and name. include get and set methods for each field; the settuition() method is abstract. create three student subclasses named undergraduatestudent, graduatestudent, and studentatlarge, each with a unique settuition() method. tuition for an undergraduatestudent is $4,000 per semester, tuition for a graduatestudent is $6,000 per semester, and tuition for a studentatlarge is $2,000 per semester. write an application that creates an array of at least six objects to demonstrate how the methods work for objects for each student type. save the files as student.java, undergraduatestudent.java, graduatestudent.java, studentatlarge.java, and studentdemo.java.