Choose the incorrect statement: gauss' law applies to a closed surface of any shape coulomb's law can be derived from gauss' law and symmetry gauss' law states that the net number of lines crossing any closed surface in an outward direction is proportional to the net charge enclosed within the surface gauss' law can be derived from coulomb's law according to gauss' law, if a closed surface encloses no charge, then the electric field must vanish everywhere on the surface

4/6 = 2/3

so it should take 3/3 hours per man. so 9 hours is the answer 3*3 =9

step-by-step explanation:

10 b/c 5*2 =10

step-by-step explanation:

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1