An Exoplanet Orbits Its Star on a Circular Orbit with a Radius

question 47

Multiple Choice

An exoplanet orbits its star on a circular orbit with a radius of 2 AU.If the planet is in the star's habitable zone,the star has a luminosity of:

• A) 1 solar luminosity.
• B) 2 solar luminosities.
• C) 4 solar luminosities.
• D) 16 solar luminosities.

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Definitions:

Martin Luther King, Jr.

An influential American civil rights leader who played a pivotal role in advancing civil rights through nonviolent civil disobedience based on his Christian beliefs.

Civil Rights Movement

A decades-long struggle by African Americans and allies to end institutionalized racial discrimination, disenfranchisement, and racial segregation in the United States.

Tactical Options

Strategies or actions available to individuals, organizations, or military forces to achieve specific objectives.