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

Author Question: A 140-keV photon strikes an electron and scatters through an angle of 120 from its original ... (Read 50 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 29, 2018
A 140-keV photon strikes an electron and scatters through an angle of 120 from its original direction.
 
  (melectron = 9.11  10-31 kg, c = 3.00  108 m/s, h = 6.626  10-34 J  s)
  (a) What is the wavelength of the photon before scattering?
  (b) What is the photon wavelength after scattering?

Question 2

A +5.0-C point charge is placed at the 0 cm mark of a meter stick and a -4.0-C charge is placed at the 50 cm mark. What is the net electric field at the 30 cm mark? (k = 1/40 = 8.99  109 N  m2/C2)
 
  A) 4.0  105 N/C
  B) 5.0  105 N/C
  C) 9.0  105 N/C
  D) 1.4  106 N/C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

poopface

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 8.87 pm (b) 12.50 pm

Answer to Question 2

D


ETearle

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Jul 29, 2018
Thanks


poopface

  • Sr. Member
  • ****
  • Posts: 339
Reply #3 on: Jul 29, 2018
Welcome :)


« previous next »
 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Electron Microscope Images of a Diatom Electron Microscope Images of a Diatom
Mosquito Eyes Up Close: Electron Microscope Image Creates Stunning View Of Insect Mosquito Eyes Up Close: Electron Microscope Image Creates Stunning View Of Insect
Scorpions, Spiders and Sharks: Electron-Microscope Images Scorpions, Spiders and Sharks: Electron-Microscope Images
Cyclic electron flow Cyclic electron flow
When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ... When viewed from the Earth, Venus subtends an angle of about 1 arcminute (1/60°) when it is at ...
Video: Protein Secondary and Tertiary Structures - Animation

For a complete list of videos, visit our video library