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Leni [432]
3 years ago
7

Which of the following is a pure substance that can't be separated by physical means, and can't be decomposed into other substan

ces by chemical means?
Question 1 options:

compound


mixture


element


molecule
Physics
2 answers:
g100num [7]3 years ago
6 0

Your answer is C. element

Nesterboy [21]3 years ago
3 0

Answer:

The answer is option C

Explanation:

ELEMENT: A substance that cannot be disintegrated (broken down) into simplistic substances by conventional chemical medians. For instance: gold, iron, carbon, hydrogen, oxygen, nitrogen. Every element possesses individual physical and chemical characteristics.

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Juliette [100K]

Answer:

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Explanation:

6 0
4 years ago
Why does the area around the equator stay about the same temperature year round?
Verdich [7]
Axial Tilt and Sun Energy

This axial tilt means that during the Earth's journey around the sun the poles receive varying amounts of sunlight. The equator, however, receives relatively consistent sunlight all year. The consistency of energy means the equator's temperature stays relatively constant all year.
3 0
3 years ago
Compare and contrast the theories about the origin of the universe
Vaselesa [24]

Answer:

The best-supported theory of our universe's origin centers on an event known as the big bang. This theory was born of the observation that other galaxies are moving away from our own at great speed in all directions, as if they had all been propelled by an ancient explosive force.

Explanation:

hope this helps tho i don't quite know what you mean

7 0
3 years ago
Find the radius of the circle formed by the intersection of a sphere of diameter 26 units and a plane that is 5 units away from
horrorfan [7]

Answer:

12 units

Explanation:

This problem can be solved if we take into account the equation for a sphere

x^{2}+y^{2}+z^{2}=r^{2}\\x^{2}+y^{2}+z^{2}=(\frac{26}{2})^{2}=13^{2}

where we took that the radius is 13 units. If we take z=5 and we replace this value in the equation of the sphere we have

x^{2}+y^{2}+(5)^{5}=13^{2}\\x^{2}+y^{2}=144=(12)^{2}

where we have taken x2 +y2 because if the equation of a circunference.

In this case the intersection is made when we take z=5, for this value the sphere and the plane coincides in values.

Hence, the radius is 12 units

I hope this is useful for you

regards

8 0
3 years ago
A swimmer jumps from a waterfall thats is 8.5 m high from the lake below. How fast must he run horizontally to dive 2.5m away fr
Mashutka [201]
He must run at 6m/s
6 0
3 years ago
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