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

Author Question: Two 5.0-C point charges are 12 cm apart. What is the electric potential (relative to infinity) of ... (Read 35 times)

Engineer

  • Hero Member
  • *****
  • Posts: 527
on: Jul 29, 2018
Two 5.0-C point charges are 12 cm apart. What is the electric potential (relative to infinity) of this combination at the point where the electric field due to these charges is zero? (k = 1/40 = 9.0  109 N  m2/C2 )
 
  A) 25 MV B) 12.5 MV C) 1.5 MV D) 0.0 MV E) 0.75 MV

Question 2

A perfectly black sphere 18.0 cm in diameter is held at a temperature of 215C.
 
  ( = 5.670  10-8 W/m2  K4, Wien displacement law constant is 2.90  10-3 m  K, h = 6.626  10-34 J  s, c = 3.00  108 m/s)
  (a) Near what wavelength does this sphere radiate most strongly?
  (b) If all the radiated energy were at the wavelength found in part (a), how many photons would the sphere emit each second?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dominiqueenicolee

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

(a) 5.94 m (b) 9.79  1021 photons


Engineer

  • Member
  • Posts: 527
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

mcarey591

  • Member
  • Posts: 365
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Water Potential, Solute Potential, and Pressure Potential Water Potential, Solute Potential, and Pressure Potential
An electric sphygmomanometer. An electric sphygmomanometer.
The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ... The left-hand rule states that if a coil is grasped with the left hand, the fingers will point in ...
How to find the equation of a line that is perpendicular to a line passing through a point How to find the equation of a line that is perpendicular to a line passing through a point
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 ...
What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ... What is the freezing point of a solution of 2.86 g MgCl2 in 100 g of water? Kf for water is ...
Video: First Stage of Labor and Delivery Video

For a complete list of videos, visit our video library