This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Two cylindrical resistors are made of the same material and have the same resistance. The resistors, ... (Read 66 times)

viki

  • Hero Member
  • *****
  • Posts: 525
on: Jul 28, 2018
Two cylindrical resistors are made of the same material and have the same resistance. The resistors, R1 and R2, have different radii, r1 and r2, and different lengths, L1 and L2 . Which of the following relative values for radii and lengths would result in equal resistances?
 a. r1 = r2 and 4L1 = L2
  c. 2r1 = r2 and 4L1 = L2
  b. r1 = r2 and L1 = 2L2
  d. 2r1 = r2 and L1 = 2L2

Question 2

A rotating flywheel can be used as a method to store energy. If it is required that such a device be able to store up to a maximum of 2.00  106 J when rotating at 400 rad/s, what moment of inertia is required?
 a. 50 kgm2
  c. 12.5 kgm2
  b. 25 kgm2
  d. 6.3 kgm2


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lkoler

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


viki

  • Member
  • Posts: 525
Reply 2 on: Jul 28, 2018
Gracias!

softEldritch

  • Member
  • Posts: 334
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Electricity made easy Electricity made easy
Attributed to Thomas Dennis or William Searle, Chest, made in Ipswich, Massachusetts. Attributed to Thomas Dennis or William Searle, Chest, made in Ipswich, Massachusetts.
A simple and easy-to-use tester can be made from a lighter plug and double banana plug that fits ... A simple and easy-to-use tester can be made from a lighter plug and double banana plug that fits ...
A track inside an ignition coil is not a short, but rather it is a low-resistance path or hole that ... A track inside an ignition coil is not a short, but rather it is a low-resistance path or hole that ...
Sheets are the most commonly used draping material. Sheets are the most commonly used draping material.
Hazardous Material Vector Icon Hazardous Material Vector Icon
Video: Mendel's Pea Experiment

For a complete list of videos, visit our video library