Hook's law says that the force required to stretch a spring is proportional to the distance stretched. If a force of 18 lb is required to stretch a spring 6 in., how much force is required to stretch the spring 15 in.?

Which of the following statements is true?

``` Segment 1 Segment 2 int i = 0; for (int i=0; i <= 20; ++i) while (i < 20) { { Console.WriteLine (i); ++i; } Console.WriteLine (i); } ``` a) The output from these segments is not the same. b) The scope of the control variable i is different for the two segments. c) Both (a) and (b) are true. d) Neither (a) nor (b) is true.

Most databases are created and manipulated using relational database management systems.

Answer the following statement true (T) or false (F)