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2 years ago

Describe the difference between a chemical and physical change

Biology

1 answer:

Drupady [299]2 years ago

8 0

Answer:

A physical change effects a substance physically. Examples include cutting, bending, dissolving, freezing, boiling, and melting.

A chemical change effects a substance chemically. Examples include burning, rusting, and digesting.

Hope this helps.

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Women who take fertility drugs to assist in becoming pregnant have increased chances of giving birth to

Nata [24]

The correct answer is option (d) that is dizygotic twins.

The dizygotic twins also known as non-identical twins or fraternal twins, that is, two siblings who come from distinct eggs or ova, which are discharged at the similar time from an ovary and are fertilized by different sperm.

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3 years ago

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Lerok [7]

Answer:

B. Gravitropism

Explanation:

I think because gravity makes the roots go down???

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2 years ago

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The periodic table has columns that group elements according to their _____.

Firdavs [7]

I think c is the correct answer

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2 years ago

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What produces all of the light in the universe?

storchak [24]

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<h2>Source of Light in Universe</h2>

<h3>Although the Sun doesn't light up the other stars, it does provide the daylight here on Earth; and the moon and planets we see are illuminated by that same sunlight. All stars produce light (and other kinds of energy) through nuclear reactions, using the energy stored in the tiny nucleus at the center of atoms.</h3>

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2 years ago

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Kepler's second law using Mercury , which has an orbital period of about 0.24 and a semimajor axis of about 0.387 . Explain your

krok68 [10]

As the semimajor axis of a planet increase, the orbital period will decrease and the speed of the planet will decrease.

<h3>What is Kepler's second law?</h3>

Kepler's second law of planetary motion describes the speed of a planet traveling in an elliptical orbit around the Sun.

This law exaplains the speed of planets around the sun, the speed of the planet increases as it nears the sun and decreases as it recedes from the sun.

From the findings, the astronomical unit of the Mercury is 0.387 and the orbital period is 0.24 year.

$T \propto a^{3/2}$

$T = ka^{3/2}\\\\k = \frac{T}{a^{3/2}}$

From the equation above, as the semimajor axis of a planet increase, the orbital period will decrease and the speed of the planet will decrease.

Learn more about orbital period here: brainly.com/question/22247460

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1 year ago