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 94 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?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

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?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Plant cell water potential. Plant cell water potential.
Conduction of the action potential along an axon. Conduction of the action potential along an axon.
Covalent bonds form by the sharing of electrons Covalent bonds form by the sharing of electrons
A needle that drops to near zero when the engine is accelerated rapidly and then rises slightly to ... A needle that drops to near zero when the engine is accelerated rapidly and then rises slightly to ...
Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ... Terminals 85 and 86 represent the coil inside the relay. Terminal 30 is the power terminal, 87a is ...
Movement of Sodium and Potassium Ions During the Action Potential Movement of Sodium and Potassium Ions During the Action Potential
Video: Stroke volume

For a complete list of videos, visit our video library