Author Question: A half-ring (semicircle) of uniformly distributed charge Q has radius R. What is the electric ... (Read 318 times)

luvbio

  • Hero Member
  • *****
  • Posts: 623
A half-ring (semicircle) of uniformly distributed charge Q has radius R. What is the electric potential at its center?
 
  What will be an ideal response?

Question 2

Given that the wavelengths of visible light range from 400 nm to 700 nm, what is the highest frequency of visible light? (c = 3.0 x 108 m/s)
 
  A) 3.1  108 Hz
  B) 7.5  1014 Hz
  C) 2.3  1020 Hz
  D) 4.3  1014 Hz
  E) 5.0  108 Hz



tofugiraffe

  • Sr. Member
  • ****
  • Posts: 319
Answer to Question 1

Q/4 0R

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

For a complete list of videos, visit our video library