1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tems11 [23]
3 years ago
10

Careful measurements reveal that a star maintains a steady apparent brightness at most times, except that at precise intervals o

f 73 hours the star becomes dimmer for about 2 hours. The most likely explanation is that:________.1. The star is cepheid variable.2. The star is a member of binary eclipsing star system.3. The star is peridically ejecting gas into space every 73 hours.4. The star is a white dwarf.
Social Studies
1 answer:
Bess [88]3 years ago
7 0

Answer: 2

The star is a member of a binary eclipsing star system.

Explanation:

Eclipsing binaries are the main source of determining a star's mass. A binary star system is essentially a system where two stars are orbiting around a common centre of mass. Eclipsing stars are studied by measuring their the changes in their brightness over a specified period of time. Light curves are graphical representation of the variations in stars over a given period of time.

You might be interested in
According to 2012 data on the U.S. population, which of the following was correct for the adult population of prime working age,
Rina8888 [55]

The correct answer is letter C.

Explanation: According to these data it is possible to see that black men have fewer job opportunities and this is still a result of slavery and racial segregation that occurred in the United States, although these data are from 2012, I believe that the result of the research would be very similar.

8 0
3 years ago
Match the term in column 1 with the correct definition from column to federal government state government the public municipal g
8_murik_8 [283]

Explanation:

sorry couldn't get the full pic..but this is the answer.

6 0
3 years ago
Read 2 more answers
Which social problem is an example of what can happen when the rule of law breaks down?
DENIUS [597]

Answer:

I think B. high unemployment

Explanation:

Because the people will not be trustworthy any more and there will be way more violence and you will never know if the person you are hiring is a criminal.

Hope I Helped

3 0
3 years ago
Read 2 more answers
Intergenerational families that are geographically and emotionally close and have frequent contact and give mutual support are k
Aloiza [94]

They are known as "<span>tight-knit".</span>

Connections among youngsters and their folks, guardians and grandparents, or kids and their grandparents are called intergenerational connections as the meaning of intergenerational is something where numerous ages of individuals mix or meet up. Ages connect contrastingly in various families. This integration develops a bond which lasts for generations in some examples.

5 0
3 years ago
Marcel is affected by serious, persistent problems that involve relationships, aggression, fear, and depression. he is suffering
Kisachek [45]

He is suffering from "<span>emotional and behavioral disorders".</span>

An emotional and behavioral disorder is an enthusiastic handicap described by the accompanying a powerlessness to construct or keep up relational associations with peers or educators. Predictable or endless wrong kind of conduct or sentiments under typical conditions and an inclination to create physical side effects, torments or preposterous feelings of trepidation related with individual or school issues.

7 0
3 years ago
Other questions:
  • Which BEST explains how the population of a landlocked country might be affected by the country’s position?
    11·1 answer
  • Which man was not involved in early efforts to build and improve planes​
    7·1 answer
  • Can someone write me one paragraph for one question?
    7·2 answers
  • Question: How long did your family spend in an internment camp? Answer: We were sent from Florin, California, to a temporary fac
    8·1 answer
  • Why did the Articles of Confederation not provide for a chief executive?
    13·1 answer
  • The scientific name of the mystery duck is
    11·1 answer
  • PLZ ANSWER ASAP
    15·2 answers
  • Why are map important write in four point​
    13·1 answer
  • What are some of the reasons according to hooks that the views of non-white women were marginalized as the feminist movement dev
    13·1 answer
  • When is season 6 of miraculous ladybug coming out on netflix
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!