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An unknown fraction of organic matter in soil has a molecular mass of 2200 g/mol. It contains 20 carboxyl groups (pka = 5) and 10 phenolic groups (pka = 6). The pH of this soil is 5. What is its CEC? Write a sentence describing how functional groups relate to charge generation in soil.
Air refrigeration works between 1 bar and 5 bar pressure limits. The temperature of the air entering the compressor and expansion cylinder is 8+A0C and 20+B0C respectively. The expansion and compression follow the law pv1.3=Constant. Find the following: • The theoretical C.O.P of the refrigerating cycle. • If the load on the refrigerating machine is 10 tons, then find the amount of air circulated per minute through the system. Assuming the actual C.O.P is 50% of the theoretical C.O.P. • Length and diameter of the single-acting compressor run at 300 r.p.m and the volumetric efficiency are 85%.
Write a function to conduct input validation to secure the smallest buffer. You may call this function void SecurePasswordBuffer(const char *arg).
Calculate the total number of words that can be formed using the
letters of the word “MISSIPPI” if two ‘S’ and two ‘I’ are adjacent to
each other.
Construct an non deterministic Turing Machine which accepts the language { bn am: n≥1, m ≥1}, i.e., the language of all strings over {b,a}, in which there is at least one b and one a and all b’s precede all a’s.
Indicate on an energy level diagram the conduction and valence bands, donor and acceptor states and the position of Fermi level for
(i) an intrinsic semiconductor.
(ii) a n-type semiconductor.
(iii) a p-type semiconductor.
Question 4
4.1. The conductivity of silver is 6.5 x 107per Ohm per m and number of conduction electrons per m3 is 6 x 1028. Find the mobility of conduction electrons and the drift velocity in an electric field of 1 V/m. Given m = 9.1 x 10–31 kg and e = 1.602 x 10–19 C.
4.2 What is Lorentz number? The thermal and electrical conductivities of Cu at 200C are 390 Wm-1K-1 and 5.87 x107W-1m-1 respectively. Calculate Lorentz number.
5.1 The electron and hole mobilities in a Si sample are 0.135 and 0.48m2/V-s respectively. Determine the conductivities of intrinsic Si at 300 K if the intrinsic carrier concentration is 1.5 x 106 atom/m3. The sample is then doped with 1023 phosphorus atom/m3. Determine the equilibrium holeconcentration, conductivity, and position of the Fermi level relative to the intrinsic level.
Suppose that the market demand for facial mud packs are given as follows: P = 2,200 – Q.
Mud packs can be produced at no cost. Determine the level of output that would be produced by each firm in a Cournot duopoly in the long run. Calculate the price charged for mud packs. Show all calculations.
A frog jumps and takes 2 seconds to land. The path of the frog’s flight is best modeled by the graph of f(x) = -x2 + 2x. What is the maximum height of the jump?
Distinguish between the following terms
i. General management and Process management
ii. Project work and Business as usual
iii. Project and Project Management
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