# 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.

**add maths**

(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%

**Science Grade 8**

behavior

**college physic**

The cross-sectional areas are circular so that ; therefore,

**microeconomics**

you need to provide more info to be able to draw the line for production possibilities frontier..