The aluminum strut is fixed between the two walls at AAA and BBB. If it has a 2 in. by 2in2 \mathrm{in}2in. square cross section, and it is subjected to the torque of 80lb⋅ft80 \mathrm{lb} \cdot \mathrm{ft}80lb⋅ft at CCC, determine the reactions at the fixed supports. Also, what is the angle of twist at C?Gal =3.8(103)ksiC ? G_{\text {al }}=3.8\left(10^3\right) \mathrm{ksi}C?Gal =3.8(103)ksi.
Use nodal analysis to find VoV_oVo in the circuit in the figure.
If you drop a pair of tennis balls simultaneously from the top of a building, they will strike the ground at the same time. If you fill one of the balls with lead pellets and then drop them together, which one will hit the ground first? Which one will experience greater air resistance? Defend your answers.
Write the chemical symbols for three different atomic cations that all have 10 protons.