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

Author Question: A piano wire has a radius of 0.50 mm. One end is fixed and the other is wrapped around a tuning peg, ... (Read 87 times)

fox

  • Hero Member
  • *****
  • Posts: 540
on: Jul 29, 2018
A piano wire has a radius of 0.50 mm. One end is fixed and the other is wrapped around a tuning peg, which has a diameter of 3.5 mm and is 80 cm away. After the wire just becomes taut, the peg is given three full turns.
 
  What is the tension in the wire? Young's modulus for steel is 20  1010 N/m2. A) 3.8 kN
  B) 4.3 kN
  C) 6.5 kN
  D) 8.7 kN
  E) 9.8 kN

Question 2

The inductance of a solenoid 16.0 cm long with a cross-sectional area of 1.00  10-4 m2 is 1.00 mH. How many turns of wire does this solenoid have?
 
  A) 318,000
  B) 159,000
  C) 1130
  D) 282
  E) 150


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Tonny

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

C


fox

  • Member
  • Posts: 540
Reply 2 on: Jul 29, 2018
Gracias!

billybob123

  • Member
  • Posts: 336
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

A, Unequal pupils; B, dilated, fixed pupils. A, Unequal pupils; B, dilated, fixed pupils.
Hubble’s Tuning Fork Diagram Hubble’s Tuning Fork Diagram
Tuning Curves Tuning Curves
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 ...
Reactions in assimilation of ammonia and major fates of the fixed nitrogen Reactions in assimilation of ammonia and major fates of the fixed nitrogen
A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp A sphere, 0.30 m in radius, has a surface emissivity of 0.48 and is at a temp
Video: Dendrite Animation

For a complete list of videos, visit our video library