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devlian [24]
3 years ago
10

Penguins, which are birds, and seals, which are mammals, do not share a common ancestors, but both have flippers adapted for swi

mming. Which of the following best describes the flippers of penguins and seals?
Penguins and seals are a result of divergent evolution with vestigial structures.
Penguins and seals are a result of divergent evolution with homologous structures.
The flippers of penguins and seals are analogous structures with similar functions but different ancestors.
The flippers of penguins and seals are homologous structures with similar functions and ancestors.
Biology
1 answer:
dem82 [27]3 years ago
6 0

Answer:

The flippers of penguins and seals are analogous structures with similar functions but different ancestors.

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The gravitational potential energy of Sara at the given height is 10594.8J.

Given the data in the question;

  • Mass of Sara; m; = 60kg
  • Distance from ground; h = 18m
  • Acceleration due to gravity; g = 9.81m/s^2
  • Gravitational potential energy; U = \ ?

<h3>Gravitational Potential Energy</h3>

Gravitational potential energy is the potential energy an object with mass posessses relative to another object with mass due to gravity.

It is expressed as;

U = mgh

Where m is mass, h is height and g is acceleration due to gravity.

To determine the gravitational potential energy of Sara, we substitute our given values into the expression above.

U = mgh\\\\U = 60kg * 9.81m/s^2 * 18m\\\\U = 10594.8kgm^2/s^2\\\\U = 10594.8J

Therefore, the gravitational potential energy of Sara at the given height is 10594.8J.

Learn more about gravitational potential energy: brainly.com/question/3910603

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Answer:

The correct answer is option C.

Explanation:

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