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

Author Question: Assume electrons are accelerated through a potential difference of 25 000 V inside a TV picture ... (Read 113 times)

darbym82

  • Hero Member
  • *****
  • Posts: 570
on: Jul 28, 2018
Assume electrons are accelerated through a potential difference of 25 000 V inside a TV picture tube. What is the minimum wavelength that could be produced when the electrons strike the phosphor? (1  = 10-10 m)
 a. 0.50
  b. 1.0
  c. 10
  d. 100
  e. 0.25

Question 2

How much energy is in an 89.7 MHz photon of FM-radiation?
 a. 2.2  10-33 J
  b. 9.5  10-27 J
  c. 7.4  10-42 J
  d. 5.9  10-26 J
  e. 3.7  10-25 J


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mochi09

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 28, 2018
Answer to Question 1

A

Answer to Question 2

D


darbym82

  • Hero Member
  • *****
  • Posts: 570
Reply #2 on: Jul 28, 2018
Thanks


mochi09

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Jul 28, 2018
Welcome :)


« previous next »
 

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

This 1900 photograph of steel factories at night in Duquesne, near Pittsburgh, was tinted by hand. S This 1900 photograph of steel factories at night in Duquesne, near Pittsburgh, was tinted by hand. S
Inside of the Human Immunodeficiency Virus (HIV) Inside of the Human Immunodeficiency Virus (HIV)
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
Always connect an exhaust hose to the tailpipe of a vehicle to be run inside a building. Always connect an exhaust hose to the tailpipe of a vehicle to be run inside a building.
Kinetic versus Potential Energy Kinetic versus Potential Energy
Estimating Potential Blood Volume Loss (Part 1) Estimating Potential Blood Volume Loss (Part 1)
Video: Calvin Cycle Explained!

For a complete list of videos, visit our video library