Numerade

Questions asked

BEST MATCH

What is the area between the curves x=y and y=x^3 from y=−1 to y=1?

View Answer

BEST MATCH

True or False: A reflux reaction can be performed in a closed system.

View Answer

BEST MATCH

Under certain circumstances a rumor spreads according to the equation p(t) = 1/(1+ae^-kt) where p(t) is the proportion of the population that has heard the rumor at time t and a and k are positive constants. Find lim p(t) as the limit reaches infinity

View Answer

BEST MATCH

Question 20 The central nervous system is protected by O elastic cartilage. O bone. O muscle. O hyaline cartilage. O fibrous cartilage.

View Answer

BEST MATCH

In the laboratory, a liquid or solid ______ provides nutrients for microbial growth. Multiple choice question. broth agar medium

View Answer

BEST MATCH

describe the human genome. of what does it consist and what has the Human Genome Project achieved?

View Answer

BEST MATCH

Alkenes Alkene A has the following structure: H3C $ \text{CH}_2 $ H3C a) Give the IUPAC name of alkene A: (1 mark) b) When alkene A reacts with hydrogen iodide, HI, two products are formed, a major and minor product. i. Give the full mechanism for the production of the major product. (4 marks) ii. Give the structure of the minor product and explain why it is the minor product (3 marks)

View Answer

BEST MATCH

Consider the loop transfer function (i.e., open-loop) $L(s) = KG_c(s)G(s)$, where $G(s) = \frac{10}{(s+1)(s-1)}$ 1. Select a new pole/zero pair as $G_c(s) = \frac{s+z_1}{s+p_1}$ as a controller of the system, in order to stabilize it. 2. Select a stable gain $K = K_1$ for the closed loop system. 3. Estimate the overshoot and settling time for $K = K_1$ based on the dominant roots of the system.

View Answer

BEST MATCH

Find the price that will maximize profit for the demand and cost functions, where $p$ is the price, $x$ is the number of units, and $C$ is the cost.\Demand Function\$p = 75 - 0.1\sqrt{x}$\per unit\Cost Function\$C = 30x + 600$

View Answer

BEST MATCH

Pressure vessels (PV) are common equipment in petrochemical industry. Design and operations of the vessels are regulated and hence PV need to be designed in accordance to accepted standards. You are required to design a pressure vessel to be used by a chemical processing plant. The required specifications of the PV are included in Table Q5. PV is to be designed with length/diameter ratio, L/D=3 and welding efficiency, E=1 with fully radiographic examination. Assume design volume is 1.2 working volume. a. Propose a design of horizontal PV by selecting suitable head as per ASME VIII Div 1 guidelines, [15 marks] b. Two 8-inch nozzles, one for air inlet and the other for air outlet, of SA 106 GR B material are required for the PV. Propose a design of the nozzles. [5 marks] Table Q5 Operating pressure and temperature 580 psi & 550°F Vessel volume (working volume) 8 m³ Joint efficiency Shell = 1 Flange ratings psig at ambient psig at D, T psig DT Materials Shell SA 516 - GR70 Heads SA 181 - GR 1 Nozzle SA 106 - GR B

View Answer

maria a.