The resistance of a wire of lengt L0 and radius r0 is 1 ohm If the wire is stretched so thay its radius becomes 0.25r0. what is the new resistance of the wire

Explanation:

Initial length of wire=

Initial radius of wire=

Resistance of wire=1 ohm

After stretching

Radius of wire=r=

New resistance  of wire=R

When the wire drawn under tensile stress  then volume remains constant.

...(1)

Using the formula

Using equation (1)

Area , A=

Substitute the values

answer; i believe the correct answer is (40,000 j) good luck

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.