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3 years ago

Which best describes oil and water

1 answer:

7 0

Answer: Oil and water are highly soluble because they have separate chemical properties. Oil and water have a low solubility because they have separate chemical properties. Oil and water are highly soluble because they exert different pressures.

Explanation: if oil is put in a cup with water, it will separate from the water.

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_______ are different forms of a single element. A) Atoms B) Elements C) Ions D) Isotopes

ELEN [110]

The answer is D. Isotopes.
Hope that helped.

7 0

4 years ago

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Reading glasses with a power of 1.50 diopters make reading a book comfortable for you when you wear them 1.8 cmcm from your eye.

Vlad1618 [11]

Answer:

The near point is $n =44.8 \ cm$

Explanation:

From the question we are told that

The power is $P = 1.50$

The distance from the eye is $k = 1.8 \ cm$

The distance of the book from the eye is $z = -28 \ cm$

Generally the focal length of the glasses is

$f = \frac{1}{P}$

=> $f = \frac{1}{1.50 }$

=> $f = 0.667 \ m$

=> $f = 66.7 \ cm$

The object distance is evaluated as

$u = z + k$

=> $u = -28 + 1.8$

=> $u = -26.2 \ cm$

The image distance is evaluated from lens formula as

$\frac{1}{v} = \frac{1}{f} + \frac{1}{u}$

=> $\frac{1}{v} = \frac{1}{66.7} + \frac{1}{-26.2}$

=> $v=- \frac{1}{0.0232}$

=> $v=- 43 \ cm$

The near point is evaluated as

$n = -v + k$

=> $n =-(-43) + 1.8$

=> $n =44.8 \ cm$

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3 years ago

explain what would be the same and what would be different about the phases and view of Earth to an inhabitant of the near side

guapka [62]

Answer:

Both the Earth and the moon are always half illuminated by the sun. But from either world, at any given time, you can see varying portions of that lighted half – or various phases of the Earth or moon. ... Instead, from a given point on the moon's near side, you'd always see Earth hanging in your sky.

Explanation:

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3 years ago

What is the equation used to calculate the total amount of energy used by an appliance?

charle [14.2K]

Answer:

Power = Current × Voltage

Explanation:

Units:

Power = Watts

Current = Àmperes

Voltage = Volts

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3 years ago

When a substance goes directly from a gaseous state to a solid state as dry ice does

Naddik [55]

Answer: Sublimation I think.

Explanation:

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3 years ago

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