Questions asked
if the reference point is a platform and a jumper falls 10 meters, would the system be negative?
Identify each of the following as an oxidation or a reduction. Drag the appropriate items to their respective bins. Al(s)→Al$^{3+}$(aq) + 3e$^-$ Cd(s)→Cd$^{2+}$(aq) + 2e$^-$ Fe$^{3+}$(aq) + e$^-$→Fe$^{2+}$(aq) Be$^{2+}$(aq) + 2e$^-$→Be(s) Oxidation Reduction
Which of the following statements about p53 is false a. mutations in it are always sporadic, and never inherited b. it is normally present in every cell type c. it is one of the most commonly mutated genes in tumors d. none of these answers
2) A force of 45.6 N is used to stretch a spring ($k = 63.1 \text{ N/m}$). What is the potential energy of the stretched spring?
A right circular cone has volume $V = \frac{\pi}{3}r^2h$ and surface area $S = \pi r\sqrt{r^2 + h^2}$. Find the dimensions of the cone with surface area 17 and maximal volume. (Give exact answers. Use symbolic notation and fractions where needed.)
5. Here is an impossible reaction (a reaction that doesn't occur spontaneously). In this reaction, a chemist dreams of converting the carbon dioxide gas and vapors of water emitted by her car into a recyclable solid fuel with the given structure. She proposes that the reaction could be made possible using a new synthetic compound as catalyst and the sunlight as the source of energy. Balance the chemical reaction involved. What is the coefficient of $CO_2$ in the balanced chemical reaction? H C H?C CH? Sunlight H?C CO? (g) + H?O (l) ? + O? (g) Catalyst HC CH C C H? H?C H C H? a) 4 b) 6 c) 7 d) 10 e) 11
Consider f ( x ) = - 17 sqrt(2 - x) on [ - 322 , - 223 ] . Determine the interval over which f is continuous and the interval over which f is differentiable.
Question 2 (30 marks) a) You are asked to give an estimation of a moment of an extemal beam of 7m spans that is supporting a living room of 3.5m x 7m. Show the calculation. Use your experience in the double storey house project to estimate the loads and other assumptions. (6 marks) b) Using moment from (a and the ebam size is 250mm x 450mm, determine the steel ratio $\rho = \frac{A_s}{bd}$ required if the beam is designed as a balanced section. State assumptions in calculation and your comment of the design. (10 marks) c) Check the design of a column of a single storey house by a junior engineer in Figure 2. The column is subjected to an axial load of 500kN and a moment of 30kNm about a major axis. Give your comment and show him how to optimize the design so that the column have the same thickness as the wall. (14 marks) Informasi rekabentuk: fck = 40N/mm$^2$ fyk = 500N/mm$^2$ Bar provided = 4 H12 Link = 6mm @200mm c/c Figure 2: Column Cross Section
A certain measurement system has a transfer function \frac{X(s)}{Y(s)} = \frac{(s+\alpha)(3/\alpha)}{s^2+s+6}. Using MATLAB, plot the response of the system when Y(s) is a unit step for the parameter \alpha = 0.5, 2, and 20.
Write pseudocode describing how to produce the one sigma bounds on a fit given a data series. Steps should be general, start with reading in the data, and the use of python functions is fine.
