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### Sulver of the weekIykman   Nigeria

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 Application of Fourier transform       by: Smailliw,     5 months ago Solve using Fourier transform Answers: 1 Reply

 Rigid body dynamics       by: Smailliw,     5 months ago four particles of equal mass are attached to a light inextensible string at the point ABCD where AB=BC=CD and placed with three point of the string taut and forming three sides of a regular hexagon, An impulse is given to the particle at A so that it moves in the dirrction BA with speed U, show that the particle at D begins to move with velocity U/13 Answers: 1 Reply

 chemistry       by: Enidiokdebbie,     8 months ago balance the chemical equation: 1.Cu[NO(subscript)3](subscript)2 -Cu+NO(subscript)2 + O(subscript)2 2.H(subscript)2SO(subscript)4 + KOH - K(subscript)2SO(subscript)4 + H(subscript 2)O 3.ZnCO(subscript)3 + HCl - ZnCl(subscript)2 + H(subscript 2)O + CO(subscript)2 Answers: 1 Reply

 Statistics       by: Billmill5454,     2 years ago Give me an example of a complete statistic for N(u, u^2) ? (If that's even possible - both parameters please! :) ) Answers: 3 Reply

 Maths       by: Bella99,     2 years ago a) a mortgage is taken out for Rm10000 and is repaid by annual instalments of Rm2000. Interest is charged on the outstanding at 10% calculated annually. If the first payment is made one year after the mortgage is taken out find the number of years it takes for the mortgage to be repaid. b) A bank loan of Rm500 is arranged to be repaid in 2 years by equal monthly instalments. Interest (calculated monthly) is charged at 11% p.a on the remaining debt. Calculate the monthly repayment if the first repayment is to be made after the loan is granted Answers: 1 Reply

 power system analysis       by: Williamsspark,     2 years ago compute the simple operating margin CO2 factor for the year 2020 if the system load of 600Mw, is supplied by 10 coal unit with a capacity of 100Mw, 10 oil fired generatior with a capacity of 50Mw and 10 gas fired generator with a capacity of 50Mw.  a) the systeem load of 6600Mw supplied from only unit b) the system load of 600Mw equally form gas unit and wind and solar Answers: 1 Reply

 Physics       by: Bella99,     2 years ago Particles A and B are attached to the end of a light inextensible string which passes over a smooth pulley.  The system is held at rest with the string taut and its straight parts vertical. Both particles are at a height of 0.36m above the floor.  The system is released and A begin to fall reaching the floor after 0.5s  a) find the acceleration of A as it falls  The mass of A is 0.55kg. Find b) the  tension in the string while A is falling  c) the mass of B d) the maximum height above the floor reached by B Answers: 2 Reply

 Physics       by: Bella99,     2 years ago A particle is projected with speed 60m/s from a point on horizontal ground in a direction making an angle of a° above the horizontal . The particle reaches the ground again after 12s. Find  a) the value of a° b) the greatest height reached by the particle  c) the length of time for which the direction of motion of the particle is between 20° above the horizontal and 20°below the horizontal  d) the horizontal distance travelled by the particle in the time found in part c) Answers: 3 Reply

 Physics       by: Bella99,     2 years ago Oil having a density of 930 kg/m3floats on water. A rectangular block of wood of 4.00 cm high and with a density of 960 kg/m3floats partly 8n the water. The oil completely covers the block. How far below the interfere between the two liquids is the bottom of the block? Answers: 5 Reply

 Physics       by: Bella99,     2 years ago Spherical particles of protein of density 1.8g/cm3 are shaken up in a solution of 20oC water. The solution is allowed to stand for 1.0h. If the depth of water in the tube is 5.0 cm find the radius of the largest particles that remain 8bs solution at the end  of the hour. Answers: 3 Reply

 ionic equilibria       by: Bella99,     2 years ago A student mixes 50.0 mL of 1.00 M Ba(OH)2 with 86.4 mL of 0.494 M H2SO4. Calculate the mass of BaSO4 formed and the pH of the mixed solution. (Ksp Ba(OH)2 = 5.0x10-3) Answers: 1 Reply

 mathematics       by: Bella99,     2 years ago . The lines l and m have equations r = 3i − 2j + k + s(−i + 2j + k) and r = 4i + 4j + 2k + μ(ai + bj − k)  respectively, where a and b are constants.  a) given that l and m are perpendicular, find the values of a and b. Answers: 1 Reply

 Physics       by: Bella99,     2 years ago A projectile is fired straight upward from the Earth's surface at the South Pole with an initial speed equal to one third the escape speed. (a) ignoring air resistance determine how far from the centre of the Earth the projectile travels before stopping momentarily.(b) what 8s the altitude of the projectile at this instant? Answers: 2 Reply

 Maths       by: Bella99,     2 years ago The question is attached here Answers: 3 Reply

 Physics       by: Bella99,     2 years ago Questiin no 18 Answers: 4 Reply

 Physics       by: Bella99,     2 years ago Question is attached here Answers: 2 Reply

 anuity       by: Fridayudeme,     2 years ago What is the present value of an ordinary annuity of #2500 @ 10%, over 5years, 10years, indefinitely Answers: 1 Reply

 mathematics of finance       by: Fridayudeme,     2 years ago the profit in thousands of naira from a daily production corporate is given by which is a function of the level of production (x) in thousands. If dp/dx = 11 - 2x and the profit breakeven point is known to be a production of #3000. Find. (a) P as a function of x (b) daily production operations that give maximum profit. (c) the value of maximum daily profit Answers: 3 Reply

 time value of money       by: Fridayudeme,     2 years ago A company negotiates a loan of #200,000 over 15 years at an interest rate of 12% per anum. What is the annual constant repayment neccessary to pay off the debt? Answers: 2 Reply

 anuity       by: Fridayudeme,     2 years ago what is the present value of an ordinary anuity if #2500, (a) over 5 years. (b) over 10 years. (c) indefinity Answers: 2 Reply

 Polynomial       by: Bella99,     2 years ago The polynomial x4 + x3 + ax +3 is denoted by p(x). It is given that p(x) is divisible by x2 - x + 1. a) find the value of a b) when a has this value,find the real roots of the equation of p(x)=0 Answers: 1 Reply

 Polynomial       by: Bella99,     2 years ago Find the polynomial of degree 3 if P(1) = P(-2)=0, P (-1)=4 and P (2)=28 Answers: 1 Reply

 Polynomial       by: Bella99,     2 years ago The remainder of polynomial of P(x) is 3 when divided by (x-2) and 2 when divided by (x-3). If the remainder of P(x) is (px +q) when divided by      (x2 -5x +6) find the value of p and q. Answers: 2 Reply

 issue of shares       by: Fridayudeme,     2 years ago The question is attached below Answers: 1 Reply

 Statistical Errors       by: Nwakaeze,     2 years ago four trucks loads of imported rice analysed for pb2+ the results obtained indicated the following  concentrations A=3.998(+- 0.015),B=2.556(+- 0.015),C=2.880(+-0.01),D=3.443(+-0.015) calculate the mean constant  of the  results and determine d absolute and relative uncertainty. Answers: 1 Reply