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 94 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

cassie_ragen

  • Member
  • Posts: 347
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Manganese helps Deinococcus radiodurans to avoid radiation damage. Manganese helps Deinococcus radiodurans to avoid radiation damage.
The classic stages of the demographic transition. The classic stages of the demographic transition.
Sleeping study Sleeping study
Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme Cultural Variations in the Strange Situation Across cultures, most toddlers exhibit secure attachme
The 300-meter Radio Telescope at Arecibo, Puerto Rico The 300-meter Radio Telescope at Arecibo, Puerto Rico
These findings are from Colby and Kohlberg's long-term longitudinal study These findings are from Colby and Kohlberg's long-term longitudinal study
Video: Transmission Across a Synapse

For a complete list of videos, visit our video library