Math

AlgebraQ&A LibraryElectrical Resistance The resistance R of a wire variesdirectly as its length L and inversely as the square of itsdiameter d.(a) Write an equation that expresses this joint variation.(b) Find the constant of proportionality if a wire 1.2 mlong and 0.005 m in diameter has a resistance of140 ohms.(c) Find the resistance of a wire made of the same materialthat is 3 m long and has a diameter of 0.008 m.(d) If the diameter is doubled and the length is tripled, bywhat factor is the resistance changed?Start your trial now! First week only $4.99!*arrow_forward*

Question

Electrical Resistance The resistance R of a wire varies

directly as its length L and inversely as the square of its

diameter d.

(a) Write an equation that expresses this joint variation.

(b) Find the constant of proportionality if a wire 1.2 m

long and 0.005 m in diameter has a resistance of

140 ohms.

(c) Find the resistance of a wire made of the same material

that is 3 m long and has a diameter of 0.008 m.

(d) If the diameter is doubled and the length is tripled, by

what factor is the resistance changed?

Tagged in

Math

Algebra

Find answers to questions asked by students like you.

Q: 4. The roots or solutions of x² + x + 1 = 0 are nonreal. %3D

A: We are solving the first question and for the next question post the question again and also mention...

Q: Find the maximum value of the expression given below on the horizontal span of 0 to 8. 9x2 − ex

A: Click to see the answer

Q: I need help

A: Click to see the answer

Q: 23–48 ■ Absolute Value Inequalities Solve the inequality.Express the answer using interval notation.

A: We'll answer the first question since the exact one wasn't specified. Please submit a new question s...

Q: Solve the given equation. x + 3 = 2 in Z5

A: Consider the given: x+3=2 in ℤ5Base elements of ℤ5 are 0,1,2,3,4.x+3+2=2+2mod5x+5=4mod5x+0=4mod5 ...

Q: By cutting away identical squares from each corner of a rectangular piece of cardboard and folding u...

A: Given, a cardboard is 15 in long and 4 in. wide. The corners of the cardboard are removed in the sha...

Q: Simplify (7x)(8y)(xy)

A: Given, 7x8yxy

Q: Value of a Lot The value of a building lot on Galiano Islandis jointly proportional to its area and ...

A: Value of a Lot The value of a building lot on Galiano Island is jointly proportional to its area and...

Q: 96–97 ■ PROVE: Inequalities Use the rules of inequalities toprove the following inequalities.

A: “Since you have asked multiple question, we will solve the first question for you. If you want any s...