« previous next »

Author Question: Two point charges of +20.0 C and -8.00 C are separated by a distance of 20.0 cm. What is the ... (Read 104 times)

BrownTown3

  • Hero Member
  • *****
  • Posts: 564
on: Jul 29, 2018
Two point charges of +20.0 C and -8.00 C are separated by a distance of 20.0 cm. What is the magnitude of electric field due to these charges at a point midway between them? (k = 1/40 = 8.99  109 N  m2/C2)
 
  A) 25.2  106 N/C directed toward the negative charge
  B) 25.2  106 N/C directed toward the positive charge
  C) 25.2  105 N/C directed toward the negative charge
  D) 25.2  105 N/C directed toward the positive charge
  E) 25.2  104 N/C directed toward the negative charge

Question 2

A rod has a length 2.00000 m at 10.0C. The length of the rod increases to 2.00060 m when the temperature increases to 30.0C. What is the coefficient of linear expansion of the material from which the rod is made?
 
  A) 1.5  10-5/K
  B) 1.0  10-5/K
  C) 1.0  10-3/K
  D) 2.5  10-5/K
  E) 2.0  10-5/K


krakiolit

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

BrownTown3

  • Hero Member
  • *****
  • Posts: 564
Reply #2 on: Jul 29, 2018
Thanks


krakiolit

  • Sr. Member
  • ****
  • Posts: 318
Reply #3 on: Jul 29, 2018
Welcome :)


« previous next »
 

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

How to find the point of intersection of two straight lines by graphing How to find the point of intersection of two straight lines by graphing
Use of a hand tool to apply pressure to a trigger point. Use of a hand tool to apply pressure to a trigger point.
effect of pH on ionization and charges of amines and carboxylic acid effect of pH on ionization and charges of amines and carboxylic acid
Two tiny particles having charges of +7.00 μC and -9.00 μC are placed along the y-axis. The ... Two tiny particles having charges of +7.00 μC and -9.00 μC are placed along the y-axis. The ...
Four 2.0-µC point are at the corners of a rectangle with sides of length 3.0 cm and 4.0 cm. ... Four 2.0-µC point are at the corners of a rectangle with sides of length 3.0 cm and 4.0 cm. ...
The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C? The molality of a C12H23O11 solution is 0.6 m. what is the freezing point of the solution C?
Video: Embryonic development - Week 3

For a complete list of videos, visit our video library