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2 years ago

Which of the following is an example of velocity ?

Physics

2 answers:

Mademuasel [1]2 years ago

7 0

The correct answer is c because B) is a vector which includes both velocity and direction

AnnZ [28]2 years ago

7 0

B) 10 m/s to the right

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Control rods in a nuclear reactor are used to:

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B.absorb neutrons to prevent chain reactions which become uncontrollable

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Which of these ionic compounds have polyatomic ions? Check all that apply.

Taya2010 [7]

Answer:

CaCO₃ and
NaOH.

Explanation:

Polyatomic ions are ions that contain more than one atom in each one of the ions.

Ionic compounds are made of cations (positive ions) and anions (negative ion). By convention, the cation is written before the anion.

List the ions in each compound:

Cation: $\rm Ca^{2+}$ ,

Anion: $\rm {CO_3}^{2-}$ .

$\rm Ca^{2+}$ is a monatomic ion for it contains only one atom in each ion.

$\rm {CO_3}^{2-}$ is a polyatomic ion for it contains four atoms (one C atom and three O atoms) in each ion.

Cation: $\rm Na^{+}$ ,

Anion: $\rm F^{-}$ .

Both $\rm Na^{+}$ and $\rm F^{-}$ are monatomic for they contain only one atom in each ion.

Cation: $\rm Fe^{2+}$ ,

Anion: $\rm {O}^{2-}$ .

Both $\rm Fe^{2+}$ and $\rm O^{2-}$ are monatomic for they contain only one atom in each ion.

Cation: $\rm Ca^{2+}$ ,

Anion: $\rm {Cl}^{-}$ .

Both $\rm Ca^{2+}$ and $\rm Cl^{-}$ are monatomic for they contain only one atom in each ion.

Cation: $\rm Na^{+}$ ,

Anion: $\rm {OH}^{-}$ .

$\rm Na^{+}$ is a monatomic ion for it contains only one atom in each ion.

$\rm {OH}^{-}$ is a polyatomic ion for it contains two atoms (one O atom and one H atom) in each ion.

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2 years ago

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It is D as it is the only answer referring to weather and climate.

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Voyager 2 is a space probe, launched in 1977, to study the outer planets. It will continue to travel through space for thousands

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The 1st law I believe.

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Study the force diagram to complete the sentences. The forces acting on the box are . The box will move to the .

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Answer: unbalanced and right

Explanation:

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