The star HR 4621 has an apparent magnitude of 2.6 and an absolute magnitude of -0.3 . This star is at a distance
a. closer than 10 pc.
b. farther than 10 pc.
c. No way to tell.
b
You might also like to view...
What is a chemical equation?
A) It is a shorthand notation for illustrating a chemical reaction. B) It is the sum of the masses of the products and reactants. C) It is the chemical combination of equal numbers of reactants and products. D) It is a picture of the atoms undergoing a chemical equalization. E) It is any type of reaction that takes place at the equator.
The ______________ on the Moon are believed to have been caused by moonquakes
Fill in the blank(s) with correct word
In geology, a crystal of a particular chemical composition or structure is referred to as a
A) rock B) fossil C) mineral D) stone
An ore car of mass 4 000 kg starts from rest and rolls downhill on tracks from a mine. A spring with k = 400 000 N/m is located at the end of the tracks. At the spring's maximum compression, the car is at an elevation 10 m lower than its elevation at the starting point. How much is the spring compressed in stopping the ore car? Ignore friction