PLS I really need your help, Im being timed. I need to say what the "fully qualified domain name" from this code. Does anyone know what it is?

Under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

Which of these is most responsible for differences between the twentieth century to the twenty-first century?

Knowing that the central portion of link bd has a uniform cross sectional area of 800 mm2 , determine the magnitude of the load p for which the normal stress in link bd is 50 mpa. (hint: link bd is a two-force member.) ans: p = 62.7 kn