This topic contains a solution. Click here to go to the answer

Author Question: A 120-m long copper wire (resistivity 1.68 10-8 m) has resistance 6.0 . What is the diameter of the ... (Read 190 times)

krzymel

  • Hero Member
  • *****
  • Posts: 548
A 120-m long copper wire (resistivity 1.68  10-8 m) has resistance 6.0 . What is the diameter of the wire?
 
  A)
 
  0.065 mm
  B)
 
  0.65 mm
  C)
 
  0.65 cm
  D)
 
  0.65 m
  E)
 
  6.5 m

Question 2

A set of twins, Andrea and Courtney, are initially 10 years old. While Courtney remains on Earth,
 
  Andrea rides on a spaceship which travels away from Earth at a speed of 0.60c for five years (as measured by Courtney), then immediately turns around and comes back at 0.60c. When Andrea returns, Courtney is 20 years old. How old is Andrea upon her return?
  A) 20 y B) 15 y C) 12 y D) 10 y E) 18 y



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

momolu

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

B

Answer to Question 2

E




krzymel

  • Member
  • Posts: 548
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)


jamesnevil303

  • Member
  • Posts: 337
Reply 3 on: Yesterday
:D TYSM

 

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?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

For a complete list of videos, visit our video library