9. Covert the following azimuths into bearings: 251° 43' 52" S 71° 43' 52" w 111° 32' 59" = S 68° 27' 1" E 336° 32' 52" = N 23° 27' 8" w
9. Covert the following azimuths into bearings: 251° 43' 52" S 71° 43' 52" w 111° 32' 59" = S 68° 27' 1" E 336° 32' 52" = N 23° 27' 8" w
QUESTION 43 (10 Marks) a) Calculate the conductivity of an intrinsic silicon (SI) semiconductor at 27°C if the hole mobility is 460 cm V's and the electron mobility is 1350 cm? Vis! Assume an intrinsic carrier density of 1.45 x 10 carriers/cm' and an electron charge of -0.16 x 10-4C (3 marks) b) Using Figure 8, calculate the conductivity of the Si intrinsic semiconductor if the temperature is increased to 150°C, assuming the same electron and hole mobilities (2 marks)...
(a) Evaluate Lim 12nº +6n – 175 n700 4n? - 2n + 71 [2 marks] (b) Determine the sum of the first 198 positive integers (the natural numbers 1,2,3,4...). [2 marks] (c) Determine 2{t.cos 21} [5 marks]
Use the following dataset of a small population (N=9). (4 marks) 71, 74, 76, 77, 78, 84, 86, 90, 93 Calculate and report: the mean the Sum of Squares the Variance the Standard Deviation
Calculate and label the sample sum, n, mode, median, and mean 33, 5, 41, 97, 71, 41, 51, 2, 73, 15, 39, 19, 97, 39, 50
Question No: 3 (2 + 3 - 5 Marks) CLO % 450 (A).......... ...2 Marks Calculate the actual discharge in the channel Take the Coefficient of discharge of the given We a 0.7 ......3 Marks Uniform flow was established in a rectangular channel with following data,
4. (12 marks) This question pertains to the iron-iron carbide phase dingrane below 1%)() 2.11 43 Ai 0.77 727"C 6.67 500 0.0218 Fe,C Weight percent carborn For a Fe-0.6 wt% C alloy at temperature just below the eutectoid. (a) calculate the fractions of total ferrite and cementite phases b) Calculate fractions of the proeutectoid ferrite and pearlite.
5. [5 marks] (a) A= = (4) B = (23) Calculate AB and BA (b) Evaluate S(4x3 – 3x2 + 2x – 1)dx (c) Convert the parametric equation to both vector and Cartesian form: [5 marks) X = 2 +31 y = 1 -21 z = 42 [5 marks) (c) A card is picked at random from a pack of 20 cards numbers 1, 2, 3, ..., 20. Given that the card shows an even number, find the probability that...
Police investigators, examining the scene of an accident involving two cars, measure 71-mm-long skid marks of one of the cars, which nearly came to a stop before colliding. The coefficient of kinetic friction between rubber and the pavement is about 0.88.
43&44 please!
Question 43 Calculate the pH of a HNO3 solution with a hydrogen ion concentration of .98M (1 point) 0.00877 0.1 9.55 Not enough information Question 44 Calculate the pH of a HNO3 solution with a hydrogen ion concentration of .25M (1 point) 0.56 0.6 1.78 Not enough information