Questions in Grade College

Questions in Grade College

[Jawaban] Which formula can be used to find velocity if kinetic energy and mass are known? [tex]v=\sqrt{\frac{1}{2}(K E)(m)}[/tex] [tex]v=\sqrt{\frac{2 m}{K E}}[/tex] [tex]v=\sqrt{K E(m)}[/tex] [tex]v=\sqrt{\frac{2 K E}{m}}[/tex]

[Jawaban] From a process standpoint, can anyone say if you'd rather have large standard deviations or small ones? Why?

[Jawaban] Use the given conditions to write an equation for the line in point-slope form and slope-intercept form. Passing through $(-5,-5)$ and $(5,7)$ Type the point-slope form of the equation of the line. $\square$ (Use integers or simplified fractions for any numbers in the equation.)

[Jawaban] Melissa collected the data in the table. | x | Given | Predicted | Residual | |---|---|---|---| | 1 | 2 | 1 | 1 | | 2 | 3 | 4 | -1 | | 3 | 8 | 7 | 1 | | 4 | 9 | 10 | ? | When x=4, what is the residual? A. -3 B. -1 C. 1 D. 3

[Jawaban] What will the first step look like for the substitution problem: $\begin{array}{l} y=2 x \ x+y=9 \end{array}$ A. $2 y+y=9$ B. $y+2 x+x+y=9$ C. $y=2 x+9$ D. $x+2 x=9$

[Jawaban] The two forms of democracy are: A. national and state. B. republican and democrat. C. local and national. D. direct and representative.

[Jawaban] Solve the inequality. Express your answer using interval notation. Graph the solution set [tex]$\frac{x}{3} \geq 3-\frac{x}{9}$[/tex]

[Jawaban] Which expressions can be used to find -m? Select two options. [tex]\cos ^{-1}\left(\frac{9.8}{6.3}\right)[/tex] [tex]\cos ^{-1}\left(\frac{6.3}{9.8}\right)[/tex] [tex]\cos ^{-1}\left(\frac{7.5}{9.8}\right)[/tex] [tex]\sin ^{-1}\left(\frac{9.8}{7.5}\right)[/tex] [tex]\sin ^{-1}\left(\frac{7.5}{9.8}\right)[/tex]

[Jawaban] Evaluate the integral. Give result in exact form. [tex]\int_{\frac{\pi}{2}}^{\frac{5 \pi}{6}}(11 \cos (x)+3) d x=[/tex]

[Jawaban] 1. A D-region in a reinforced concrete member is defined as a portion a) Where strain varies linearly through the depth b) Within a distance equal to the member height h from a discontinuity c) Governed by St. Venant's principle d) With uniform stress distribution 2. Which statement about bottle-shaped struts is false? a) They require transverse reinforcement to control splitting cracks b) Their effective strength fce uses βs = 0.75 c) They have uniform width along their length d) They are idealized with a 1:2 taper at ends 3. A nodal zone resisting three compressive forces is classified as a) C-C-C node b) C-C-T node c) C-T-T node d) T-T-T node 4. The effective compressive strength fce for a bottle-shaped strut with transverse reinforcement is a) 0.85 × 0.60 f'c b) 0.85 × 0.75 f'c c) 0.85 × 1.0 f'c d) 0.85 × 0.80 f'c 5. For deep beams, the minimum horizontal reinforcement Avh must satisfy a) Avh ≥ 0.0025 bws b) Avh ≥ 0.0015 bws^2 c) Avh ≥ 0.003 bws d) Avh ≥ 0.83 f'c bwd 6. If the anchorage length of a tie exceeds the extended nodal zone, the ACI Code requires a) Increasing the strut width b) Using hooks, mechanical anchors, or extending the bar c) Reducing the concrete strength d) Ignoring the anchorage requirement 7. A hydrostatic nodal zone is designed to ensure a) Equal compressive stresses on all faces b) Maximum tensile stress at the node c) Minimal use of reinforcement d) Zero strain compatibility 8. According to ACI Code 11.8.3, the maximum nominal shear strength Vn for a deep beam is a) 0.83 f'c bwd b) 1.1 f'c bwd c) 0.17 f'c bwd d) 0.75 f'c bwd 9. Transverse reinforcement in bottle-shaped struts is primarily used to a) Increase axial load capacity b) Resist longitudinal splitting due to spreading compression c) Reduce nodal zone dimensions d) Replace tension ties 10. An efficient strut-and-tie model prioritizes a) Maximizing the number of tension ties b) Minimizing energy by using stiff compression paths c) Uniform nodal zone sizes