The electrical resistance of a wire varies directly with the length and inversely with the square of the diameter of the wire. If a wire 432 feet long and 4 millimeters in diameter has a residence of 1.24 ohms, find the length of a wire of the same material whose resistance is 1.44 ohms and whose diameter is 3 millimeters

Question

15-09-2017
Mathematics

contestada

The electrical resistance of a wire varies directly with the length and inversely with the square of the diameter of the wire. If a wire 432 feet long and 4 millimeters in diameter has a residence of 1.24 ohms, find the length of a wire of the same material whose resistance is 1.44 ohms and whose diameter is 3 millimeters

Respuesta :

Otras preguntas

When we experience any form of attraction for someone else, we are likely to engage in ________ behaviors, which signal our interest in another person?

Jillian has $50 that she plans on investing in an account that will double her money every week. This can be represented by the equation M = 50(2)x where M repr

What term designates foods that contain nonnutrient substances that may provide health benefits beyond basic nutrition? functional foods organic foods disea

Kidney failure is often treated by hemodialysis, in which blood diverted out of the body is filtered and then allowed to flow on one side of a semipermeable mem

How many regular tickets were sold and how many premium tickets were sold?

In Japan,growers have developed ways of growing watermelon that fit into small refrigerators. Suppose you cut one of these watermelon cubes open using one cut.

Match the following terms and definitions. 1. a type of egg or sac filled with fluid to support an embryo endothermic 2. a sac-like ball of cells surrounding a

Which mathematical figure has length but no beginning or end

Your model locomotive is 16 inches long. It is an exact model of a locomotive that is 40 feet long. A window on the locomotive is how many times wider than a wi

caylus caylus · Answer 1 · 2017-09-15T18:30:28+02:00

caylus caylus

15-09-2017

Hello,

[tex]\boxed{R=k* \dfrac{l}{D^2} }\\\\ 1)k=R* \dfrac{D^2}{l} =1.24* \dfrac{4^2}{432} \\ 2)l=R* \dfrac{D^2}{l} =1.44* \dfrac{3^2}{1.24*\frac{16}{432}} =282.1935...(feet)\\[/tex]

Answer Link