Which of the following energy changes occurs as a bow is drawn and released?1. gravitational potential to chemical potential
2. magnetic potential to kinetic
3. elastic potential to kinetic
4. kinetic to thermal

Answers

Answer 1

Answer:

Answer: The correct answer is 3.

Explanation: As the bow is drawn and released, it will experience a change in elastic potential energy to kinetic energy.

Elastic potential energy is defined as the amount of potential energy which is stored as a result of the deformation of the object which has some elasticity in it. For Example: Stretching of a spring, Drawing of a bow, etc..

Kinetic energy is the energy of the object which is possessed as a result of its motion.

When the bow is drawn, it first had some elastic potential energy and when it is released it had some kinetic energy in it.

Conclusion: The correct answer is 3.

Answer 2

Answer: 3. elastic potential to kinetic
Mechanical energy is the top suject while it has two types: Kinetic energy which is the energy in motion and potential energy which is the energy in reserve. The measure of both energy in motion and reserve is called Joules. Joules then is the International System of Measurement unit for energy, this is mainly used to account for scaling energy in all aspects.

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Two students made the Lewis dot diagrams of NH3. The diagrams are as shown.Which student drew the correct Lewis dot diagram?

Only Student A
Only Student B
Both Student A and Student B
Neither Student A nor Student B

Answers

Answer : The correct option is, Only Student B

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, $NH_3$

As we know that nitrogen has '5' valence electrons and hydrogen has '1' valence electron.

Therefore, the total number of valence electrons in $NH_3$ = 5 + 3(1) = 8

According to Lewis-dot structure, there are 6 number of bonding electrons and 2 number of non-bonding electrons.

The Lewis dot structure of student A is wrong because there is a coordinate bond present between the nitrogen and hydrogen is not covalent.

The correct Lewis-dot structure of $NH_3$ is shown by the student B.

Answer:

niether of them

Explanation:

the rest are bs

Please help with the question above!

Answers

Answer:

Explanation:

The answer is B metallic bonds

Explain the function of ribosomes and why cells need them

Answers

The job of ribosomes is to make protein that is used inside the cell. Your cells use proteins for structural units, as transportation mechanisms between the interior and exterior and as specialized catalysts (enzymes). Therefore, if you don't have ribosomes, the cells wouldn't live because they wouldn't have them to do the functions they need.

Final answer:

Ribosomes are essential cell components that facilitate protein synthesis by translating mRNA into proteins. These proteins play various important roles in cell and organism function and survival, making ribosomes key for growth and survival.

Explanation:

Ribosomes are essential organs within a cell that play a significant role in the protein synthesis process. They are primarily responsible for decoding an organism's DNA into RNA, specifically an mRNA (messenger RNA), which is then used as a template for constructing proteins, a process known as translation.

Proteins produced in ribosomes function in numerous ways, including as enzymes, antibodies, and cell membrane components. Without ribosomes cell would have no way of making these essential proteins.

This is why cells need ribosomes. They are indispensable for the growth and survival of cells and organisms, as they make proteins that are crucial for cell function and growth.

Learn more about Ribosomes here:

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What differs between a radioactive isotope and a stable isotope?A. Stable isotopes are shorter
B. Radioactive Isotopes last for less time
C. Radioactive isotopes last longer.
D. There is no difference

Answers

A radioactive isotope is emitting particles such as a fast moving electron or positron (radiation) and this is changing its structure. Eventually it may reach a stable configuration and will no longer decay. An stable isotope is simply a name for a form of an element which is chemically identical to other atoms of the element but with a different number of neutrons. I hope this helps!

Radioactive isotopes last for less time, is the one among the following choices given in the question that shows the way a radioactive isotope and a stable isotope differs

If an element has more than one ionic charge, how is that piece of information represented in a chemical name?

Answers

usually with roman numerals, like iron (II) chromate
iron has a charge of 2
or manganese (IV) oxide, manganese has a charge of 4
(these are ionic compounds just to let you know)

Pls Help! I have to come up with a funny name for my science project on growing mold on bread any ideas? oh and it cant be too long