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3 years ago

What was Newtons first law of motion??

2 answers:

5 0

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. ... The third law states that for every action (force) in nature there is an equal and opposite reaction.

hope this helped <3

Ksivusya [100]3 years ago

4 0

Answer:

Basically an object in motion or at rest will remain that way unless an outside force acts against it.

Explanation:

Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia.

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42. What is the valency of carbon in CH3-CH3, CH2=CH2 and HC=CH

Nina [5.8K]

Answer:

what is the valency of carbon in CH3-CH3,CH2=CH2AND HC=CH. The valency of carbon in all the given structures is fourplanation:

6 0

3 years ago

Which of the following best describes the main function of the nervous system?

Svetach [21]

C, because the nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.

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3 years ago

What are the number if protons, neutrons, and electrons

marishachu [46]

protons and electrons are both always the atomic number which is 9 in this case.

For neutrons you subtract the atomic number (9) from the weight of the atom (18.998) some teachers will want you to round to the nearest whole (19). We do this because the number of protons is the atomic number so if you subtract the protons from the whole weight of the atom you would have the electrons and neutrons left. Since electrons weigh so little we don't have to subtract them. Weighing neutrons and electrons would be like weighing an elephant (neutrons) and then putting one marshmallow on the scale (electron).

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4 years ago

Assign oxidation numbers to the element in each of the following compounds. Remember an oxidation number is for one atom of the

worty [1.4K]

Answer:

a. x = + 2

b. x = + 3

c. x = + 2

d. x = + 3

Explanation:

The oxidation number is a formal charge assigned to an atom present in a molecule or formula unit or ion based on some arbitrary rules.

HgO

The oxidation number of Hg in HgO is:

x + (-2) = 0

x = +2

Al₄C₃

The oxidation number of Al in Al₄C₃ is:

4x +(3 × -4) = 0

4x - 12 = 0

4x = +12

x = 12/4

x = +3

c. CrF₂

x + ( 2 × - 1) = 0

x - 2 = 0

x = + 2

d. Fe₂S₃

2x + ( 3 × - 2) = 0

2x + (-6) = 0

2x = 6

x = 6/2

x = +3

7 0

3 years ago

Why is urbanization contributing to pollution? People in urban areas strip the soil of nutrients and make it difficult to grow c

slavikrds [6]

We have to know how urbanization causes pollution.

The reason is: People in urban areas consume more energy, food, and water.

Urbanisation is one of the major problem towards pollution. The smoke from automobiles, factories and power generators make air unhealthy. Also chemical spills and other toxic gases contaminate in air.

The mixing of toxins in the soil is polluting soil which disturbs eco-system.

The high density population in urban area consume more energy , food and water which causes pollution.

7 0

3 years ago

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