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photoshop1234 [79]
3 years ago
5

Explain the relationship between the mass of star and its life span.

Biology
2 answers:
Lapatulllka [165]3 years ago
7 0
The larger mass a star has the shorter its life span will be because since it is so large, the more nuclear energy it has to create to keep it up and running. So the smaller the star the longer its life span and vise versa. Hope this helped!
belka [17]3 years ago
7 0

The life of a star basically depended on the hydrogen contained with in it. A star burns hydrogen during majority period of its life and convert hydrogen into helium on the main sequence. So the main sequence life time is determined by the mass of the star as mass of hydrogen contained is equivalent to the mass of star and the life time is dependent on the mass of the hydrogen.

Thus, it can be stated that mass of star is directly proportional to its lifetime.

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The surgical placement of an artificial joint is known as
Alekssandra [29.7K]

Answer:

Arthroplasty

Explanation:

The restoration of function of a joint is called Arthroplasty. The bone functions are restored by maintaining the  bones through resurfacing. Some times artificial joints are also used instead of resurfacing the existing bones.

Arthroplasty is a method to cure Osteoarthritis, or degenerative joint disease where joint cartilages reduces with age.

Also when medical treatments no longer make any impact on the joints of bone pain then Arthroplasty is done.

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3 years ago
How is the atomic number obtained?
dybincka [34]
Atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.
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3 years ago
The ribosome of the bacterium E. coli includes the ribosomal protein L4 (rpl4). The rpl4 gene carries the instructions for makin
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Answer:

Every organism possesses in its ribosome a protein that is similar to rpl4. This protein has an amino acid sequence that is similar to the sequence of E. coli’s rpl4.

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Phylogenetic tree is a diagram which represents the similarities between different organisms and shows their evolutionary histories.

The presence of a similar genetic sequence or amino acid sequence shows that the gene is common in all those organisms. This means that all organisms had a common ancestor through which the gene or amino acid was transferred. The genetic r amino acid sequence remained common in all the different organisms.

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3 years ago
MULTIPLE CHOICE<br> How can a polar molecule be described?
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Answer:

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3 0
3 years ago
which of these is NOT true of cells?a. they are much like empty rooms.b. they were first discovered in the 1600sc. they can be f
Harlamova29_29 [7]

Answer:

The answer is a. they are much like empty rooms.

Explanation:

Cells are pretty much the opposite of empty rooms. There are many organelles and processes happening in them, so there's no space for empty rooms. Even when there are spaces, which anyway would be full of liquid, these spaces have a purpose.

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