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(chatquestion)...Solve z4+2z2+2 = 0

asked Oct 15, 2020 by 448028959

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(chatquestion)...3 1 Madison leaves her house and bikes north at a constant speed of 10 miles per hour. If he dad leaves the same house two hours later, driving north at a constant speed of 15 miles per hour, how long will it take him, in hours, to reach Madıson? A) 2 B) 3 C) 4 D) 5 2

asked Oct 15, 2020 by 775562742

1 answer

(chatquestion)...BASIC MATHEMATICS 4. Find the value of 'a' such that |2ax - 5|+|ax +2|+lox-17 =7 is satisfied for at least one value of x.

asked Oct 11, 2020 by 1051790812

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(chatquestion)...29 rod it in quilibriun then find d out friet' (m. M= Skg =lom) AN 53°

asked Oct 1, 2020 by 831769186

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(chatquestion)...Find the Eguivalant Cafiacitane b/u A SqB im 20 .2C 20 %3D C.

asked Sep 29, 2020 by 981932063

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(chatquestion)...4G l 9:18 O Vo) LTE Assi gnment 1 Suppose we have connected the maximum allowable supply voltage Vg. Under this condition what should be the minimum value of the load resistance R (in S) that can be connected without overrating any of the transformers? 1 point A coil of a transformer has 100 turns and is connected to 50 Hz, 220 V (RMS) supply. Estimate 10) the peak value of the flux 4max (in milli Wb). 1 point A 12 kVA, 60 Hz transformer is used in a 50 Hz power system. Under this situation, what is the maximum amount of kVA that this transformer can handle so that the no-load current is not more than the rated value? 1 point COMMON DATA FOR QUESTION 12 to 14 rele j 302 1An II

asked Sep 26, 2020 by 981932063

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(chatquestion)...Vo) 4G SI LTE 4G l 9:18 9 O Assi gnment 1 COMMON DATA FOR QUESTION 6 to 9 Is CLood) Ilov:1100V 4.4 KVA lo00v:10ov 5KVA Two transformers are connected in cascade as shown in the figure. The rating of the two transformers are also given in thc figure. What is the maximum vahie of the supply voltage V, (in V) that can be connected without 61 overrating any of the transformers? 1 point What is the maximum value of the supply current I, (in A) that can be drawn without overrating 7) any of the transformers? 1 рolnt What is the maximum value of the kVA that can be transmitted to the load without overrating any of the transformers? 1 point

asked Sep 26, 2020 by 981932063

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(chatquestion)...COMMON DATA FOR QUESTION 16 to 17 A 40 kVA, 4000/400 V single-phase transformer has the following parameters HV side: winding resistance r, = 3.6 N, leakage reactance x, = 5.2 N LV side: winding resistance r, = 0.04 N, leakage reactance x2 = 0.056 N %3D 16) Estimate the per unit value of total equivalent winding resistance 1 рoint 17) Estimate the per unit value of total equivalent leakage reactance

asked Sep 26, 2020 by 981932063

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(chatquestion)...Q.12 Express the following in form of a + ib (3+iv5) (3+i v5) (V3+vZi)-(v3-ivZ) A) 2/2i B) 4V2i C) -2/2 i D) 0 Full Marks : 2 A C

asked Sep 22, 2020 by 831769186

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(chatquestion)...imoxing woth velocity *A bibek Vo on a Smoothe hosizondol suofece hit Yar Sprinng 9 const. k as shonon The max. compoes7n in Spning is mak m

asked Sep 21, 2020 by 619669533

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(chatquestion)...maks m ic obrling the cofth -fn a air cl lor orbit 9 adius If Stons 1esfng enorgy slowly ata et const. Vite ŷ due to foiction .f M&R denste the mass B dius 1 the conthsespectively- Shon that the sateuli te fale om the carth Dezd A A satellite the canth sespecetivoy. în a time t = 9 Mm 7-+) GMm 28

asked Sep 21, 2020 by 619669533

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(chatquestion)...The real part of (1-i)', where i = -1 is %3D a)e-/4 log, 2 COS (b) – e /4 sin loge 2 e/4 COS log, 2 (d)e-/4 sin log, 2 112

asked Sep 19, 2020 by 831769186

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(chatquestion)...A string of length l is fixed at both ends. It is vibrating in its 3rd overtone with maximum amplitude 'a'. The amplitude at a distance l/3 from one end is 3a (c) a (a) a (b) 0 (d)

asked Sep 19, 2020 by 736563939

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(chatquestion)...Example 20 The purity of a sample of picric acid, C6H3N307, is determined by controlled-potential coulometry, converting the picric acid to triaminophenol, C6H9N30. A 0.2917-g sample of picric acid is placed in a 1000-mL volumetric flask and diluted to volume. A 10.00-mL portion of this solution is transferred to a coulometric cell and diluted till the Pt cathode is immersed. The exhaustive electrolysis of the sample requires 21.67 C of charge. Report the purity of the picric acid. = Notes Comments

asked Sep 17, 2020 by 390832952

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(chatquestion)...When N,O, is heated at certain temperature, it dissociates as N2O5 (g) N,0; (g)+O2(g); K¸=25. At the same time N,0, also decomposes as: N2O3 (g)=N20(g)+O2 (g). If initially 4.0 moles of N,0, are taken in 1.0 litre flask and allowed to dissociate. Concentration of O, at equilibrium is 2.5 M. Equilibrium concentration of N,O, is : (a) 1.0 M (c) 2.166 М (b) 1.5М (d) 1.846 M

asked Sep 16, 2020 by 736563939

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(chatquestion)...For the reaction taking place at certain temperature NH,COONH, (s) =2NH3(g)+Co,(g), if equilibrium pressure is 3X bar then AG° would be -RT In 9-3RT In X 4 (a) (b) RT In 4-3RT In X (c) - 3RT In X (d) None of these

asked Sep 16, 2020 by 736563939

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(chatquestion)...lim f(0) is. X-- 25. If f(x) = then, 2+1 %3D (A) 1 (В) -1 (C) 2

asked Sep 13, 2020 by 995324694

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(chatquestion)...(c) +- x 4 15. The potential energy of an electron in the hydrogen atom is-6.8 cV. Indicate in which excited state, the electron is present? 3 (d) 4 8 28. V (a) first (b) second 16. What is the potential energy of an electron present in Nsholl of the Be* jon? (c) third (d) fourth 29.

asked Sep 10, 2020 by 831769186

1 answer

(chatquestion)...Calculate the: I) Waveiength ii) Frequency iii) Wave number of the last line of hydrogen spectrum in Lyman series. NOTE: Wave number = (1/ wavelength) or 1/A ANSWER: i. 9.116 x10* m ii. 9.291 x 1015 -1 ii. 1.097 x 107 m...(Help)

asked Sep 7, 2020 by 796279193

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(chatquestion)...16. Initially the volume of an ideal gas (y = 1.5) is v at which root mean square velocity of the molecules is V, If root mean square velocity is reduced so that ratio of two root mean square velocities (initial to final ) is r and corresponding ratio of volumes (final to initial volume) is V,, then (a) V, =(r)* (b) V, = (r)' (c) V, = (r)' (d) V, =r

asked Sep 6, 2020 by 902751085

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(chatquestion)...- If А, ВER such that then the (3 tan A- V34 sec A)? - (V34 tan B – 5V2 sec B)² is 3 sin A sin B+4 cos B+ 5 sin B cos A = 5v2,

asked Sep 6, 2020 by 1084452675

0 answers

(chatquestion)...4G ll 0.3K/s 8:14 PM O Y A 61% ( Result Analysis Summary > 口A Question 10 of 50 Heterozygous parents have one child affected with an autosomal recessive disease. What is the probability that their second child may also be affected with the same disease? 1.0 2. 25 % 3. 50 % 4. 100 % We see that your answer is incorrect Please mention reason. (1) (2) (3) (4) 88 II

asked Sep 4, 2020 by 845909505

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(chatquestion)...roots of the equations 2018 The common 2017 z° + 2z + 2z +1 = 0 and + z* +1 = 0 %3D are (a) -1, o (b) 1, m? (c) -1, w? (d) O, o

asked Sep 3, 2020 by 1082133796

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(chatquestion)...A wheel of a van is making 400 revolutions per minute.lf the diameter of the wheel is 70cm,find its speed.

asked Sep 2, 2020 by 828571989

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(chatquestion)...(c) U= 20 m s1 40° 40° 60 m 40° FIGURE 2 FIGURE 2 shows a ball being thrown from the top of a building towards a wall 60 m away. The initial velocity of the ball is 20.0 m s-1 at 40° to the horizontal. (i) How much time does it take to hit the wall? [t=3.916 s] 60 = 15:32 6 t= 3.9165 Sy ? (ii) What is the distance between P and position the ball strike the wall? [S,= - 24.86 m]...(How to do (ii))

asked Aug 31, 2020 by 796279193

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(chatquestion)...A ping pong ball is thrown vertically upward and returns to its starting point after 4 s. Calculate the initial speed of the ball. [U, = 19.62 ms] VA %3D (i)...(How?)

asked Aug 31, 2020 by 796279193

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(chatquestion)...A world-class runner can reach a top-speed of 11 ms-1 in the first 15 m of a race. Calculate the average acceleration of the runner. [aave=4.03 ms ] Aay : AY...(How to do?)

asked Aug 31, 2020 by 796279193

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(chatquestion)...フビ60ナダーで

asked Aug 30, 2020 by 1059241904

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(chatquestion)...DIderthfy ustrich one of cthe follocoeing A derivable at x=0? Al Cos 1x1+191) B) Cos 1x/- 1x) C) DI Sininl- 1811

asked Aug 30, 2020 by 897421560

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(chatquestion)...A block starts from rest from top of incline plane 1 whose last rd part is rough. If block comes to rest at bottom, then value of coefficient of friction between block and incline plane is :- Rest Smooth Rest (1) µ = tane 1 (2) µ =-tane 1 (3) u=-tane (4) u = 3tan0

asked Aug 29, 2020 by 619669533

0 answers

(chatquestion)...The 5th term of an arithmetic sequence 18 and the 15th term is 58. Calculate the 10th term 14 15 th...(Help)

asked Aug 29, 2020 by 796279193

1 answer

(chatquestion)...8. Potential energy is 27.2 eV in second orbit of Het then calculate, double of total energy in first excited state of hydrogen atom :- (1) – 13.6 eV (2) - 54.4 eV (3) – 6.8 eV (4)- 27.2 eV

asked Aug 29, 2020 by 1029628805

0 answers

(chatquestion)...-25xs- [x], 75. Let f(x) = 2x -1 -<*? 2 where [.] represents the greatest integer function. The number of points where f (x) is non- differentiable, is: A 3 В. 4 C. 2 D. 5

asked Aug 29, 2020 by 897421560

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(chatquestion)...(1) 0.186 (2) 0.242 (3) 0.291 (4) 0.342 16. Two masses M and m hang at the two ends of a string that passes through a smooth tube as shown. The mass m moves in a circular path which lies in a horizontal plane. The length of the string from m to the top of the tube is / and 0 is the angle this length makes with the vertical. What should be the frequency of revolution of m so that M remains stationary? eb M 1 Mg (1) 2n V m/ Mg (2) 2n V ml cose 1 m/ cos0 m/ (3) 2x Mg (4) 2n VMg

asked Aug 28, 2020 by 619669533

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(chatquestion)...C. sq. cm. D. sq. cm. 37. If Ecos B, kn for any k 21 and =D1 (1+x)3 -(1-2x)4 nk A = r%3DBr), then lim is equal to: A. 0 B. TC С. D. 3/5 112 512 C.

asked Aug 28, 2020 by 897421560

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(chatquestion)...A particle is projected from the ground and simultaneously a wedge starts moving towards the right, as shown in the figure. The maximum height of the wedge for which the particle will not hit the is [g =10 ms 2] 28 (A*) 9. 28 (B) 3 to 1m/sec 7. (C) (D) m 10m/sec 53° 53° 1m

asked Aug 28, 2020 by 736563939

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(chatquestion)...77.) The ionic radii of A+ and B- ions are 0.98 x 10-10m and 1.81 × 10-10 m. The coordination number of each ion in AB is :- (3) 8 (2) 4 (4) 2 ha given acids?...(Help!!)

asked Aug 28, 2020 by 619669533

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(chatquestion)...NO. QUESTIONS ANSWER 7. Solve the equation (x+yi)(3-i)=1+2i where x and y are 1 x= and y = 10 1. %3D real numbers. 10 12...(Help)

asked Aug 28, 2020 by 796279193

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(chatquestion)...on (0, ). Example 28: Prove that f (x) = sin x is not wniformly continuous on (0, 0). %3D

asked Aug 28, 2020 by 897421560

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(chatquestion)...С. 8 D. 4 18. Consider the equation |x + 1 0=(G+2r-x*) = (x-3)|x| log(x+1)(3+2x-x²) %3D

asked Aug 28, 2020 by 897421560

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(chatquestion)...2. A circle passes through the points (-1, -1) and (3, 7). Which of the following cannot also be a point on the circle? А. (0, 1) C. (1, 0) 140 120 В. (1, 1) D. (0, 0) A. 6 С. 3 В. 1 120 D.

asked Aug 27, 2020 by 897421560

0 answers

(chatquestion)...33. In the given circuit, find the potential difference across the 6 µF capacitor in steady state. 12 V 12 www 1.5 2 4 V 1.5 2 www www 1.5 2 www D. 8 µF 1.52 1.5Ω 2 µF El F 3 µF 6 µF (1) 4 V (3) 6 V (2) 2 V (4) none of these www.

asked Aug 27, 2020 by 802055100

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(chatquestion)...26. In the given circuit, with steady current, the potential of point A must be 102 6 V 6 V IV ww- 12 V 20 2 (1) 1 V (3) 4 V (2) 3 V (4) 2 V

asked Aug 27, 2020 by 802055100

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(chatquestion)...due to a Current 247 15. A long, straight wire carries a current i. A particle having a positive charge q and mass m, kept at a distance x, from the wire is projected towards it with a speed v. Find the minimum separation between the wire and the particle. Solution :...(Please provide solution)

asked Aug 27, 2020 by 912809520

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(chatquestion)...25. Which is maximum reactive towards acid catalysed dehydration: OH QH (1) (2) CH-CH, (4) (3)

asked Aug 26, 2020 by 1029628805

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(chatquestion)...Self practice problem : Find the length of the altitudes from the vertices of the triangle with vertices: (-1, 1), (5, 2) and (3, -1). (25) 8 16 16 (25) V13 5 37 Ans.

asked Aug 26, 2020 by 897421560

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(chatquestion)...500 mL of 0.150 M AgNO3 solution were added in 500 mL of 1.09 M Fe2* solution and the reaction is allowed to reach an equilibrium at 25°c. 2+ 3+ Ag (aq) + Fe (aq) = Fe "" (aq) + Ag (s For 25 mL of the solution, 30 mL of 0.0832 M KMN04 were required for oxidation. Calculate equilibrium constant (M1) of the reaction at 25°c. [Report your answer by rounding it upto nearset whole number]

asked Aug 26, 2020 by 736563939

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(chatquestion)...(D) 4 Which one is most reactive for dehydration: OH OH (B) OH (C) (D)

asked Aug 25, 2020 by 619669533

0 answers

(chatquestion)...moning uith a speed of 50 Fm/mo can be stopped boy A cer 6 rakes af for at veast bm, w hat mill be the mini mum ooppeng distece M the sanne Cor is umo ming at a A speed q 10 lem/ r .)

asked Aug 25, 2020 by 619669533

1 answer

(chatquestion)...The total length of a sonometer wire fixed between two bridges is 10 cm. Now two more bridges are placed to divide the length of the wire in the ratio 6:3:2.If the tension in the wire is 400 N and the mass per unit length of the wire is 0.01 kg m', then the minimum common frequency with which all the three parts can vibrate, is (A*) 1000 HZ (B) 1100 Hz (C) 100 Hz (D) 110 Hz

asked Aug 25, 2020 by 736563939

1 answer

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