Author Question: Active galactic nuclei were first found through observations in the ____ wavelength band. a. ... (Read 58 times)

Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
Active galactic nuclei were first found through observations in the ____ wavelength band.
 
  a. visible
 b. infrared
 c. X-ray
 d. radio
 e. ultraviolet

Question 2

Blackbody radiation is caused by an object's ____.
 
  a. chemical structure
  b. binding energy
 c. excitation level
 d. absolute zero
 e. thermal agitation



blakeserpa

  • Sr. Member
  • ****
  • Posts: 338
Answer to Question 1

d

Answer to Question 2

e



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

For a complete list of videos, visit our video library