My son built a symmetric tent last Christmas season of 2020. The frame for the tent is shown with two-force structural parts BC, BE. CE. and EF which were made up of aluminum poles. The ropes AB and CD were made of flexible materials that are effective in tension only. Which of the following best describes the nature of forces in the parts of the frame? See figure 01 below. " EF is in compression and others are in tension EF is in tension and others are in compression O BC is in compression and others are in tension BC is in tension and others are in compression\fDetermine the elongation of member X of the compound truss [see figure 15], assuming it is made up of steel when the cross sectional area is 100 square millimeters. Express the elongation in millimeters, and round off to two decimal places. Just type the magnitude only of your answer below, without the corresponding unit. For example 7.28, or 0.69, or 14.35 1L