« previous next »

Author Question: An electron has a ________ electric charge. Fill in the blank(s) with correct ... (Read 73 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
on: Jul 27, 2018
An electron has a ________ electric charge.
 
  Fill in the blank(s) with correct word

Question 2

Why do O stars exhibit weak hydrogen absorption lines?
 
  A) At these high temperatures, nearly all the hydrogen is ionized, and is therefore unable to interact with light.
  B) O stars are too cool to excite hydrogen atoms to the first energy level from which they can then absorb visible wavelengths of light.
  C) O stars contain very little hydrogen.


fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jul 27, 2018
Answer to Question 1

negative

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Electron atomic and molecular orbitals Electron atomic and molecular orbitals
Electron Shells and Orbitals Electron Shells and Orbitals
electron microscope image of a diatom electron microscope image of a diatom
Insects Under the Electron Microscope Insects Under the Electron Microscope
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
An electron is accelerated from rest through a potential difference of 3750 V. It enters a ... An electron is accelerated from rest through a potential difference of 3750 V. It enters a ...
Video: Types of Transport - Uniport, Antiport and Symport (Glucose and Na+K+ Transporters)

For a complete list of videos, visit our video library