Aplumber is hired to plumb a house that has been renovated. in doing so the length of the pipe from the water heater to the bathroom is quadrupled. in order to maintain the same conductance to the bathroom that the original pipes (of radius r) had, what radius of pipe should the plumber use compared to the original pipes? ½ r ¼ r 2r 4r

As we know that the conductance is given by the formula

now here we know that

L = length

now we know that conductance will remain constant while the length is quadrupled

so here we have

so here radius becomes double

so correct answer will be

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate