The C $83400$ red$-$brass $(B=9\mathrm{.}8*\frac{{10}^{-6}}{}F)$ rod

AB and $2014-$T$6$ aluminum

${?}^{6}F)$ rod BC are joined at the collar B and

fixed connected at their ends. The cross$-$

sectional area of each member is $1\mathrm{.}75i{n}^2.$

Note that $E_{br}=14\mathrm{.}6,({10}^3),$ksi and

$E_{al}=10\mathrm{.}6({10}^3)ksi.$

a$.$ If there is no load in the members when $T_1=50F,$ will the members be under tension or

compression if the temperature is increased $(T_2>50F)?$

b$.$ If the temperature is raised to $T_2=120F,$ what is the internal axial loading $($force$)$ in each

segment?

c$.$ If the temperature is raised to $T_2=120F,$ what is the average normal stress in each

member?

d$.$ If the temperature is raised to $T_2=120F,$ how far will the collar be displaced?

e$.$ For the above beam, in addition to changing the temperature, we apply $20$ Kips at point B $,$

what is the reactions at supports A and C

help with B$,$ C and D please.