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

Author Question: A certain metal wire has a cross-sectional area of 1.0 cm2 and a resistivity of 1.7 10-8 m. How ... (Read 73 times)

wenmo

  • Hero Member
  • *****
  • Posts: 540
on: Jul 29, 2018
A certain metal wire has a cross-sectional area of 1.0 cm2 and a resistivity of 1.7  10-8   m. How long would it have to be to have a resistance of 1.0 ?
 
  A) 5.9  104 m B) 590 m C) 5.9 m D) 5.9 km E) 5.9  106 m

Question 2

A thin copper rod 1.0 m long has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to balance the weight of the rod?
 
  A) 9.8 A B) 2.5 A C) 1.2 A D) 4.9 A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

owenfalvey

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

D


wenmo

  • Member
  • Posts: 540
Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

matt95

  • Member
  • Posts: 317
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Thyroid conditions may make getting pregnant impossible.

the fatty acid molecules expose the smallest possible hydrophobic surface area the fatty acid molecules expose the smallest possible hydrophobic surface area
The Parahippocampal Place Area The Parahippocampal Place Area
This five-wire mass air flow sensor consists of a metal foil sensing unit, an intake air temperature ... This five-wire mass air flow sensor consists of a metal foil sensing unit, an intake air temperature ...
Apply direct pressure along upper trapezius, turning the head to access the area. Use your thumb to ... Apply direct pressure along upper trapezius, turning the head to access the area. Use your thumb to ...
Cross-Sectional Studies Cross-Sectional Studies
The phenotypic distribution in a cross with two traits: seed color and seed shape. Plants in the F2 The phenotypic distribution in a cross with two traits: seed color and seed shape. Plants in the F2
Video: How antibiotics works? 💊

For a complete list of videos, visit our video library