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 48 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
Thanks for the timely response, appreciate it

juliaf

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Lynx-hare interactions have served as a model system for the study of the effects o Lynx-hare interactions have served as a model system for the study of the effects o
Pablo Picasso, Medical Student, Sailor, and Five Nudes in a Bordello (Compositional study for Les ... Pablo Picasso, Medical Student, Sailor, and Five Nudes in a Bordello (Compositional study for Les ...
Radiation Side Effects, Healing Time, and Intervention Radiation Side Effects, Healing Time, and Intervention
Changes in Radiation-Absorbing Gases Changes in Radiation-Absorbing Gases
Effleurage as a finishing and transition technique. Finish the left side with effleurage moving back ... Effleurage as a finishing and transition technique. Finish the left side with effleurage moving back ...
Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at ... Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at ...
Video: What are Strong & Weak Acids and How they're different?

For a complete list of videos, visit our video library