ElectricPavlov

Some of the water molecules have enough energy to vaporize  even though the AVERAGE temperature is 98 c  (which is VERY close to boiling)  ...also if the pressure is lower than standard, the boiling point will be lower.....

Rich    =   20000(1.01625)^40           40 time periods of 1.625% interest

Joe     =    20000(1.0027083)^240     240 time periods of .27083% interest

Dan   =    20000 e^(.0325 x 20)

If you calculate these you find that Dan is the winner !

She starts with 6 rows of 'x' chairs with 3 remainder     6x + 3   chairs       if she adds 11 more   (6x+3) + 11   she can get 8 rows of 'x' chairs   8x

so:      (6x+3) + 11 = 8x   solve for 'x'   the number of chairs in each row

6x + 14 = 8x

14 = 2x

x = 7    is the number of chairs in each row

sqrt3 (x) = cuberoot (x)  =  x ^(1/3)

sqrt(x)    =                          x^(1/2)

From laws of exponents     x^(1/3)  *  x^(1/2)   =    x^ (1/3 + 1/2) =  x^ (5/6)      

Quadratic FORMULA  is     x =   (   -b +- sqrt (b^2 - 4ac) )  /  2a

Once you get your quadratic EQUATION into the form     a x^2  +  b x  + c = 0    you can substitute the values for 'a' 'b' and 'c' into the FORMULA to find the values of 'x' that solve the equation! 

(2kg)(450J/(KG x K)) (5 K) Please Help!!

Step 2 of 2 Preview Answer

This is dimensional analysis....it can often help you find the correct answer in the correct units for very long or complex equations (there are some that are MUCH MUCH more complex than this in engineering and physics !)    Lets just drop the numbers first to demonstrate what happens:

kg  x  j/(kg k)  x k      k is degrees kelvin   j is joules   

You should be able to see that the 'kg' s will cancel out   and the 'k' s will cancel out and you are left with only j   joules   after you multiply all of the numbers together

Now lets do the math:

2 x 450 x 5  =  4500      we already know that the unit is j     so the answer is 4500 j    or 4500 joules  

t 2006-2016 Andre Massow

"Those"   are  "Not These"

In college your answer will be considered WRONG if you don't include units ...you MAY get PARTIAL CREDIT though.....put 'em in there!

Quotient = result  of division   208/16 = 13    or it COULD BE  16/208 = .076923

cm^3   =  cm cubed  =  cubic centimeters = unit of volume