The support condition of the truss shown as Figure 1 below are such that the truss is pinned at A and supported by pin rollers at E. The truss is subjected to loading as shown on the Figure.
a) Calculate the reactions at supports A and E.
b) Calculate the force in each member of the truss. Reproduce and fill in the given table
by placing your answers in the columns designated (Force in the member) and
(Nature of the Force i. e. strut or tie)
80KN
с
90KN
3m
D
B
60kN
4m
А
E
F
40 KN
3m
3
3
Зm

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.