« previous next »

Author Question: What is the approximate surface temperature of a star with weak hydrogen absorption lines and strong ... (Read 62 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
on: Jul 27, 2018
What is the approximate surface temperature of a star with weak hydrogen absorption lines and strong absorption lines of ionized calcium?
 
  A) 4,500 K B) 6,500 K C) 5,500 K D) 3,500 K

Question 2

Which jovian planet should have the most extreme seasonal changes?
 
  A) Uranus B) Saturn C) Neptune D) Jupiter


tkempin

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

The asymmetrical appearance of Mira, an oscillating variable star. The asymmetrical appearance of Mira, an oscillating variable star.
A farm family in Custer, Nebraska, in 1888, a region where Populist sentiment was strong. A farm family in Custer, Nebraska, in 1888, a region where Populist sentiment was strong.
viable surface sampling by swab viable surface sampling by swab
Hydrogen-bond donors and acceptors in water Hydrogen-bond donors and acceptors in water
The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ... The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ...
Sea star Sea star
Video: Simple Diffusion - gases and nonpolar compounds transport

For a complete list of videos, visit our video library