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

Author Question: Radio astronomers often study the radiation emitted by a hydrogen atom from a transition between the ... (Read 66 times)

tiara099

  • Hero Member
  • *****
  • Posts: 588
on: Jul 29, 2018
Radio astronomers often study the radiation emitted by a hydrogen atom from a transition between the two hyperfine levels associated with the ground state. This radiation has a wavelength of 21 cm.
 
  What is the energy difference between the hyperfine levels? (1 eV = 1.60  10-19 J) A) 5.9  10-6 eV
  B) 5.9  10-25 J
  C) 1.7  10-24 J
  D) 4.7  10-25 J

Question 2

A proton, with mass 1.67  10-27 kg and charge +1.6  10-19 C, is sent with velocity 7.1  104 m/s in the +x direction into a region where there is a uniform electric field of magnitude 730 V/m in the +y direction.
 
  What are the magnitude and direction of the uniform magnetic field in the region, if the proton is to pass through undeflected? Assume that the magnetic field has no x-component and neglect gravitational effects.
Physics ¦ Walker ¦ 5th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

komodo7

  • Sr. Member
  • ****
  • Posts: 322
Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 49% of students answer this correctly


tiara099

  • Member
  • Posts: 588
Reply 2 on: Jul 29, 2018
Excellent

jojobee318

  • Member
  • Posts: 298
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study The threespine stickleback (Gasterosteus aculeatus) has been used as a model organism for the study
Electromagnetic Radiation Electromagnetic Radiation
How Axis Tilt Affects the Intensity of Solar Radiation How Axis Tilt Affects the Intensity of Solar Radiation
How Axis Tilt Affects the Intensity of Solar Radiation How Axis Tilt Affects the Intensity of Solar Radiation
Long-wave energy flux is emitted from Earth Long-wave energy flux is emitted from Earth
Barenboim's study show the change in children's descriptions of their peers Barenboim's study show the change in children's descriptions of their peers
Video: Sickle Cell Anemia

For a complete list of videos, visit our video library