Author Question: A 7.0-kg pipe is hung from a steel wire that is 2.5 m long and has a diameter of 0.75 mm. Young's ... (Read 127 times)

azncindy619

  • Hero Member
  • *****
  • Posts: 562
A 7.0-kg pipe is hung from a steel wire that is 2.5 m long and has a diameter of 0.75 mm. Young's modulus for steel is 2.0  1011 N/m2. (a) By what distance does the wire stretch? (b) If the wire diameter were doubled, what would be the stretch?
 
  What will be an ideal response?

Question 2

What is the net power that a person with surface area of 1.20 m2 radiates if his emissivity is 0.895, his skin temperature is 27C, and he is in a room that is at a temperature of 17C? ( = 5.67  10-8 W/m2  K4 )
 
  A) 65.7 W B) 60.3 W C) 64.8 W D) 68.4 W E) 62.6 W


amynguyen1221

  • Sr. Member
  • ****
  • Posts: 355
Answer to Question 1

(a) 1.9 mm (b) 0.49 mm

Answer to Question 2

E



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

For a complete list of videos, visit our video library