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

Author Question: The iron we commonly find in our surroundings came from: A) the iron core of a massive star which ... (Read 97 times)

Kthamas

  • Hero Member
  • *****
  • Posts: 546
on: Jul 27, 2018
The iron we commonly find in our surroundings came from:
 
  A) the iron core of a massive star which exploded as a type I supernova.
  B) planetary nebulae.
  C) jets ejected by a rapidly spinning pulsar.
  D) material ejected by a nova explosion.
  E) decay of nickel 56 and cobalt 56 in a supernova remnant.

Question 2

According to Copernicus, the retrograde motion for Mars must occur:
 
  A) at inferior conjunction, when Mars laps the Earth and passes between us and the Sun.
  B) at superior conjunction, when Mars lies on the far side of the Sun.
  C) at quadrature, when Mars lies exactly 90 degrees east or west of the Sun.
  D) at greatest elongation, when Mars can get up to 47 degrees from the Sun.
  E) at opposition, when the Earth overtakes Mars and passes between Mars and the Sun.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xthemafja

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 27, 2018
Answer to Question 1

E

Answer to Question 2

E


Kthamas

  • Member
  • Posts: 546
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

This diagram shows a cross-section of a solar-type star. This diagram shows a cross-section of a solar-type star.
Iron deficiency anemia blood cells. Iron deficiency anemia blood cells.
The toxin muscarine comes from the mushroom Amanita muscaria, more commonly known as fly agaric or m The toxin muscarine comes from the mushroom Amanita muscaria, more commonly known as fly agaric or m
Star Map Star Map
Hemoglobin Contains Heme Iron Hemoglobin Contains Heme Iron
Lead Displaces Iron Lead Displaces Iron
Video: Erythropoietin (EPO)

For a complete list of videos, visit our video library