« previous next »

Author Question: How long is a wire made from 200 cm3 of copper if its resistance is 8.5 ohms? The resistivity of ... (Read 111 times)

jayhills49

  • Hero Member
  • *****
  • Posts: 559
on: Jul 28, 2018
How long is a wire made from 200 cm3 of copper if its resistance is 8.5 ohms? The resistivity of copper is 1.7  105 Wm.
 a. 10 m
  c. 7.1 m
  b. 2.2  102 m
  d. 3.0  103 m

Question 2

A rotating flywheel can be used as a method to store energy. If it has 2.0  106 J of kinetic energy when rotating at 400 rad/s, and if a frictional torque of 4.0 Nm acts on the system, in what interval of time would the flywheel come to rest?
 a. 3.5 min
  c. 14 min
  b. 42 min
  d. 21 min


tennis14576

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

jayhills49

  • Hero Member
  • *****
  • Posts: 559
Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


tennis14576

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 28, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

A copper-striped blue-tailed skink (Emoia impar) A copper-striped blue-tailed skink (Emoia impar)
On November 11, 1887, four anarchists were hanged in Chicago on charges that they had thrown a bomb On November 11, 1887, four anarchists were hanged in Chicago on charges that they had thrown a bomb
A downward-sloping spark line usually indicates high secondary ignition system resistance or an ... A downward-sloping spark line usually indicates high secondary ignition system resistance or an ...
Relations Between Iconic Memory, Short-Term Memory, and Long-Term Memory Relations Between Iconic Memory, Short-Term Memory, and Long-Term Memory
I need help fill up the chart attached phtoto long question I need help fill up the chart attached phtoto long question
Video: Role of the respiratory system - effect of altered ventilation rates

For a complete list of videos, visit our video library