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Natali [406]
3 years ago
14

Why do helium balloons float? Talk about density of atoms and compare to elements in the air.

Physics
1 answer:
xxMikexx [17]3 years ago
7 0
The helium balloon displaces an amount of air. As long as the weight of the helium balloon fabric is lighter than the air it displaces, the balloon will float in the air. It turns out helium is a lot lighter than air.
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Blank can cause magma within Earth to blank resulting in the formation of blank rock
Lana71 [14]

Answer:

Cooling can cause magma withing Earth to solidify resulting in the formation of igneous rocks

Explanation:

Magma consists of molten or semi-molten material that forms in the mantle and travels upward due to the presence of convective currents in the Earth's interior. As the magma travels upward, it encounters lower temperatures: as a result, its temperature cools down, and the material solidifies. The rocks that form as a result of this process are called igneous rocks. There are over 700 types of igneous rocks beneath the Earth's surface, and they are known to form (together with metamorphic rock) up to 90% of all rocks to a depth of 10-15 km from the surface.

3 0
3 years ago
How does the number of valence electrons in atoms of metalloids explain why metalloids are semiconductors?
ivolga24 [154]

Answer:

They have three to six valence electrons, so they can lose or gain electrons.

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3 years ago
Where should the fulcrum be located in this lever to get the greatest mechanical advantage?
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C. When ever it comes to questions like these, I like to think of a seesaw with a huge amount of weight on one end. Which position would work best for that? With the effort arm being longer, you have more leverage so the load arm will move easier.
4 0
3 years ago
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How can the potential energy in magnets be used to create kinetic energy in an object without making contact?
NemiM [27]

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Explanation:

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3 years ago
Albert observes that Emmy's watch is ticking eanwhile, Emmy observes Albert's watch and compares it with her watch. Emmy observe
alukav5142 [94]

Answer:

1) b. more quickly than

Explanation:

It is stated in the question that Albert's watch is ticking more slowly than more quickly than at the same rate as her own watch.

Answer:

2) a. more slowly than

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Albert's watch is ticking more slowly than more quickly than at the same rate as her own watch.

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