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NeTakaya
3 years ago
6

Why are new pennies made with less copper than old pennies

Biology
1 answer:
olga_2 [115]3 years ago
5 0

Answer:

because it is cheaper to afford

Explanation:

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Sodium has the atomic number 11. How many electrons are in a sodium ion, which has the symbol Na=?
AlladinOne [14]
Atomic number is the number of protons of an atom. And, given that the atoms are electrically neutral and the charge of one proton is equal to the charge of one electron, the number of electrons is equal to the number of protons. So the neutral atom of sodium has 11 protons and 11 electrons. But, the sodium ion (Na+) has one positive charge, that means that it has lost one negative charge or one electron. Then, the sodium ion (Na+) has 11 - 1 = 10 electrons. <span>Then, the answer is that there are 10 electrons in a sodium ion. 

hope this helps :3</span>
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4 years ago
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The appearance or quality of light that is reflected from the surface of a mineral is called
Ber [7]
That would be luster!
Hope this helped :)
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3 years ago
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The nervous system and the muscle system respond to stimuli to produce motion. The movements of
Tatiana [17]

The nervous system and the muscle system respond to stimuli to produce motion. The skeletal movements of muscles are mostly voluntary.

Involuntary movements occur in these muscles when the nerve impulse passes from a sensory neuron to a motor neuron via an interneuron in the spinal cord.

<h3>What are Skeletal muscles?</h3>

Skeletal muscles may be defined as the muscles that fasten to your bones and authorize you to achieve a broad range of activities and operations.

Skeletal muscles control the direct movement of a person's will and are hence referred to as voluntary movement.

While the spinal cord is associated with both movements directly or indirectly. It is a prolonged, delicate tubelike network liable for holding incoming and outgoing messages through the brain to the rest body.

Therefore, it is well described above.

To learn more about Skeletal muscles, refer to the link:

brainly.com/question/1283837

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5 0
2 years ago
With which part or parts of the heart do you think sympathetic and parasympathetic neurons form synapses? explain your reasoning
Softa [21]

The autonomic nervous system is the one that pertains to sympathetic vs parasympathetic. The autonomic nervous system has three divisions: the enteric nervous system, the sympathetic nervous system, and the parasympathetic nervous system.

Sympathetic is the nervous system responsible for your “fight or flight” responses in times of emergencies. It controls the body’s responses to stress, injuries, or perceived threats.

Parasympathetic is the nervous system responsible for your “rest and digest” responses in times of non-emergencies. It controls the body’s responses at rest and helps your body regulate its normal daily organ functions.

One way to remember how to distinguish between the two is to associate the beginning letters of the words with their corresponding attributes.

The sympathetic nervous system kicks in during times of stress, and the parasympathetic nervous system kicks in during times of peace.

Of course, there is much more to both nervous systems than that so let’s look a little bit closer at both.

Learn more about nervous system here

brainly.com/question/13487019

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8 0
2 years ago
What is the chance that a human child will be born male?
AveGali [126]

Answer: 50% i think this is the answer

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4 years ago
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