Aseries stack of alkaline cells produces 6 kw of power. if each cell contributes 14.5 w, how many cells are in the stack? (round to the nearest whole number.) a) 2 b) 21 c) 87 d) 414

- The correct answer is D)414.

Solution:- From given information, one cell contributes 14.5 W. We need to calculate the number of cells that would produce 6 kW of power.

We know that, 1 kW = 1000 W

Convert Given kW to W and divide by the power of one cell to calculate the number of cells required. The set is made as:

= 414 cells

So, 414 cells need to be there in the stack to produce 6kW of power.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

what is the question?