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 33 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
:D TYSM

mjenn52

  • Member
  • Posts: 351
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward, In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward,
A typical pedestal grinder with a wire wheel on the left side and a stone wheel on the right side. ... A typical pedestal grinder with a wire wheel on the left side and a stone wheel on the right side. ...
Bidirectional replication from several fixed origins (O) on a linear eukaryotic chromosome Bidirectional replication from several fixed origins (O) on a linear eukaryotic chromosome
A closed loop conductor that forms a circle with a radius of is located in a uniform but ... A closed loop conductor that forms a circle with a radius of is located in a uniform but ...
A uniform solid cylinder of radius R and a thin uniform spherical shell of radius R both roll ... A uniform solid cylinder of radius R and a thin uniform spherical shell of radius R both roll ...
A highway curve of radius 80 m is banked at 45°. Suppose that an ice storm hits, and the ... A highway curve of radius 80 m is banked at 45°. Suppose that an ice storm hits, and the ...
Video: Studying the Left and Right Brain Independently

For a complete list of videos, visit our video library