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Lapatulllka [165]
3 years ago
6

Two positively charged objects (N pole) are separated by a large distance. One of the positively charged objects (N pole) is rep

laced by a negatively charged object (S pole), and the two objects are moved closer to each other.Which of the following occurs in this situation?AThe attractive force becomes a repulsive force, which increases as the objects move closer to each otherBThe repulsive force becomes an attractive force, which increases as the objects move closer to each other.CThe attractive force becomes a repulsive force, which decreases as the objects move closer to each other.DThe repulsive force becomes an attractive force, which decreases as the objects move closer to each other.
Chemistry
1 answer:
Eddi Din [679]3 years ago
6 0

Answer:

B

Explanation:

Applying law of electrostatic which states that like charges repel each other and unlike charges attract each other

N and S are unlike charges that turn and make the former repulsive force (due to two like charges N and N)to <em>reduce</em> and attractive force between N and S to <em>increa</em><em>se</em>

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Explanation:

Density =\frac{Mass}[Volume}

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(a) Density of the evacuated ball

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Volume of the ball =V=560 cm^3=560 ml=0.560 L

D =\frac{0.12 g}{0.560 L}=0.214 g/L

D<d, teh evacuated ball will flaot in air.

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Density of carbon dioxide gas = d_1=1.830 g/L

Mass of the carbon dioxide gas :

1.830 g/L\times 0.560 L=1.0248 g

Total density of filled ball with carbon dioxide gas:

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The ball filled with carbon dioxide will not float in the air because total density of filled ball is greater than the density of an air.

(c) Density of the evacuated ball D = 0.214 g/L

Density of hydrogen gas = d_2=0.0899 g/L

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The ball filled with hydrogen will float in the air because total density of filled ball is lessor than the density of an air.

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Mass of the oxygen gas :

1.330 g/L\times 0.560 L=1.7448 g

Total density of filled ball with oxygen gas:

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f) Mass must be added to sink the ball = m

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m > 0.54584 g

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