4) A two-tier column shown below is made from a material with modulus of E = 25 GPa. The top column has length L₁ = 2 m, and cross-sectional area A1. The bottom column has length L₂ = 1.5 m, and cross- sectional area A2. The entire column is loaded by two forces, P₁ and P2 as shown. Under the action of these loads, the maximum permissible shortening of the column is 1.0 mm. a) If we require that A2 = 3A1, what is the minimum permissible area A₁? b) If the areas A1 and A2 are such that the compressive stresses in both parts of the column are the same, what is the minimum permissible area A₁? P₁ = 400 kN P₂ = 650 kN L₁ = 2 m L₂ = 1.5 m

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•identify if the business activity is an example of vertical integration or horizontal integration

TV and Media Questions  In television programming, ____ is how channels and networks try to hold their audience from program to program, or from one segment of a program to another. Question 1 options:   flow   charting   streaming   rhythm   Netflix CEO in 2017: "We're competing with ____." Question 2 options:   eating   sleeping   reading   showering   Netflix embraces its role as a ____ , meaning that after the new season of a series is released, everyone around the world can watch and discuss it together.  Question 3 options:   transnational amplifier   international regulator   transnational broadcaster   international conduit