« previous next »

Author Question: Wire A and Wire B are each carrying the same current. If the diameter of Wire A is half that of Wire ... (Read 436 times)

krzymel

  • Hero Member
  • *****
  • Posts: 548
on: Jul 28, 2018
Wire A and Wire B are each carrying the same current. If the diameter of Wire A is half that of Wire B, how does the drift velocity vdA in Wire A compare to that in Wire B?
 a. vdA = 4 vdB
  c. vdA = vdB /2
  b. vdA = 2 vdB
  d. vdA = vdB /4

Question 2

A solid cylinder (I = MR2/2) has a string wrapped around it many times. When I release the cylinder, holding on to the string, the cylinder falls and spins as the string unwinds. What is the downward acceleration of the cylinder as it falls?
 a. 0
  c. 6.5 m/s2
  b. 4.9 m/s2
  d. 9.8 m/s2


adammoses97

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Wire Fox Terrier Wire Fox Terrier
A mere one-half percent of Americans owns over a quarter of the entire nation’s wealth. Very few ... A mere one-half percent of Americans owns over a quarter of the entire nation’s wealth. Very few ...
People with night eating syndrome may consume more than half their day's calories between 8 pm ... People with night eating syndrome may consume more than half their day's calories between 8 pm ...
Balance the given redox reduction equation in basic solution using the half reaction method Balance the given redox reduction equation in basic solution using the half reaction method
In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ... In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ...
The diameter of a semicircle is 4 miles. What is the semicircle's area? The diameter of a semicircle is 4 miles. What is the semicircle's area?
Video: Introduction to Herpes

For a complete list of videos, visit our video library