# Posts by hussein

Total # Posts: 20

CHEMISTRY
17.4mmHg

physics
Two cars of the same mass collide head -on and become tangled so that they move on together. If the engines of both were stopped at the moment of impact and the speeds of the cars impact were 120m/s ,find the joint velocity immediately after collision

Chemistry
In the decomposition of KCIO3 how many moles of KCI are formed in the reaction that produces 0.05 moles of O2?

MATH Fractions
This is an easy problem and can be solved as follows: Let the coins in Tony's pocket = x 5/8 of the coins are pennies, so 5/8 x = 15 x = 15 * 8 / 5 = 24 coins

Geometry
Is there a drawing to go with this problem. either send me the text book or where I can find it so I can solve it for you.

Math
Nawaf.. half of the flag is white and half is red.. send me your question on email hussein.elsayed at gmail

Physics
In the vertical direction, the ball is falling under gravity and we know the following: V0 = 0 m/sec a = 9.81 m/s H = 90 m we can apply the following velocity equation: Vf^2 = V0^2 + 2 * a * H Vf^2 = 0 + 2 * 9.81 * 90 =1765.8 Vf = Sqrt(1765.8) = 42.02 m/s We could apply the ...

maths
You can solve this easily as follows: Let the woman age now = x Daughter age now = y First information says that x = 4y second information says that (x-6)(y-6) =136 substitute from first into second (4y-6)(y-6) = 136 4 y^2 - 30 y + 36 = 136 4 y^2 - 30y - 100 = 0 Simplfying 2 y...

Math
answer is 1/2 if you swap the half circles around half the flag will be white and the other half would be red.

(x-4)(x-13)= 0 if you multiply the brackets you would go back to x^2 - 17 x + 52=0 the best is to look for the solutionof quadratic functions on google where to get the roots of the equation you substitute in x= -b +/- SQRT(b^2-4ac)/2a

trig
This is easy problem if you draw the triangles properly. If we consider the height of the tower above the person to be x and the distance remaining to reach the tower from where he made the last measurement to be y then tan 32 = y/x 0.625 = y/x x = y/0.625 = 1.6 y but we also ...

Physics
Kinetic energy is 1/2 m v^2 1 eV = 1.6 * 10^-19 Joule so 12.9 keV = 2.0668 * 10^-15 Joule mass of proton = 1.67 * 10^-27 kg substituting v^2 = 2 * 2.0668 * 10^-15/(1.67 * 10^-27) v^2 = 2.475 * 10^12 v = sqrt(2.475 * 10^12) v = 1.57 * 10^6 m/sec

Statistcal Analysis
Ok solving this problem using Excel and 4-year moving average, here are the answers: a. the seasonality components are as follows: Q1=1.18, Q2=1.14, Q3=0.43, and Q4=1.24 b. the trend equation is Sales = 164.69 (intercepT) + 4.14 (slope) * Time Period where time period is the ...

Statistcal Analysis
even better.. here is an example on youtube Excel - Time Series Forecasting - Part 1 of 3

Statistcal Analysis
You can look for this chapter .. google it and on page 40 there is a similar example solved using excel Chapter 16 - Time Series and Forecasting - McGraw-Hill

Statistcal Analysis
I do not know if you use Excel or SPSS statistical package but this problem can be solved easily on SPSS. let me know.

Financial Management
Sales = Assets x Total Asset turnover Sales = \$5,000 x 1.2 = \$6,000,000 Net Income = Assets x return on assets Net income =\$5,000,000 x 8% = \$400,000 Net Income/Sales = \$4,00,000/\$6,000,000 = 6.67%