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2 years ago

11

that delivers oxygen to your body and In the video your blood is compared to a picks up CO2 to be released out when you breath.

PLEASE I NEED A ANSWER

1 answer:

sweet-ann [11.9K]2 years ago

4 0

I’m a bit confused. What’s the question?

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Atomic nuclei of almost all elements consist of

wolverine [178]

<h2>Answer: protons and neutrons. </h2>

The atomic nuclei of almost all elements consist of protons and neutrons.

The nucleus of an atom has very small dimensions. However, it <u>occupies its central part and concentrates more than 99% of its total mass. </u>

It is in the nucleus that the protons (positive charge) and neutrons (neutral charge) are found.

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3 years ago

(a) What is the escape speed on a spherical asteroid whose radius is 545 km and whose gravitational acceleration at the surface

Keith_Richards [23]

Answer:

1777.92 m/s

Explanation:

R = Radius of asteroid = 545 km

M = Mass of planet

g = Acceleration due to gravity = 2.9 m/s²

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

Acceleration due to gravity is given by

$g=\dfrac{GM}{R^2}\\\Rightarrow M=\dfrac{gR^2}{G}$

The expression of escape velocity is given by

$v=\sqrt{\dfrac{2GM}{R}}\\\Rightarrow v=\sqrt{\dfrac{2G}{R}\dfrac{gR^2}{G}}\\\Rightarrow v=\sqrt{2gR}\\\Rightarrow v=\sqrt{2\times 2.9\times 545000}\\\Rightarrow v=1777.92\ m/s$

The escape speed is 1777.92 m/s

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2 years ago

Read 2 more answers

Paragraph about how the constellations were used by ancient civilizations.

nata0808 [166]

Answer:

What does this mean ?

Explanation:

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2 years ago

What are three types of variables in a controlled experiments?

blsea [12.9K]

The answers to your question are,

Independent, Dependent, and Control.

-Mabel <3

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2 years ago

16. If "team A has 3 of its bocce balls closer to the pallino than any of their opponent's balls, who wins the

Gre4nikov [31]

Answer:

Team A wins the frame with three points. The opposing team gets zero points for the frame.

Explanation:

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2 years ago