If length of wire is doubled keeping the diameter constant ,its youngs modulus will be

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

because if the tool that you are using is not balanced it there would be false mass.

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;