PHYSICS HIGH SCHOOL

What is the expression of the chemical composition of a compound

Answers

Answer 1
Answer: Element formula....

I do hope this helps you Darling
Answer 2
Answer:

Answer: the correct answer is chemical formula .

Explanation:

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What’s the answer here? is it d or c i’m confused
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A solar eclipse might be observed from Earth when the moon is in which position

Answers

A solar eclipse might be observed from Earth when the moon is in the newmoon phase.

What would be observed from the Moon while Earth is experiencing a solar eclipse?

During the lead-up to a solar eclipse from the Moon, a viewer on the Moon would see the Sun approach the dark disk of Earth, with the planet's nightside facing the Moon. Earth's atmosphere would be lit from behind, creating a reddish ring around the planet that would glow brighter as the eclipse proceeded.

When can you see the solar eclipse?

We will finally see a total solareclipse on April 8, 2024, in North America and Central America. The total phase will be visible from Mexico, the central United States, and eastern Canada. Another eclipse in 2024, an annular one, will take place on Oct. 2.

Learn more about the solar eclipse here brainly.com/question/1287289

#SPJ2
i think it's New Moon. hope this helped! :)

Which most likely could cause acceleration? Check all that apply.a flat road
wind
water movement
a hill
a stop light
*can be multiple answers*

Answers

Answer  

Wind  

Water movement  

A hill

Explanation.  

The question does not specify it is the acceleration of what is to be accelerated. So my answer will be general. Acceleration is the change of velocity with time.  

Wind can cause acceleration of sound. If the sound is travelling in the direction of sound, its speed wound increase. The reverse is also true.  

Water movement can also cause acceleration. When a bout is moving in the direction of water movement, then it will be expected that the resultant speed of the bout to be higher. If the bout was moving against the water movement, its speed would be decreased.  

A hill would reduce the speed of a moving vehicle. This is also an acceleration that is negative (deceleration).  

A stop light and a flat road cannot cause acceleration.  

What is produced when calcium reacts with fluorine in a synthesis reaction

Answers

Calcium fluoride is produced. It is one Calcium atom bonded to two fluoride atoms. The Calcium atom receives one electron from one fluoride and a second electron from the second fluoride atom. As a result of receiving the two electrons, Calcium will have a negative charge. The two fluorides become positive from losing an electron. The positive and negative charge attraction keeps the atoms close together to form an ionic bond.

Which spectral class does the sun belongs to

Answers

it belongs to a group named G-type stars 

Explain the mechanism by which AC (alternating current) through the primary circuit of a transformer produces an alternating voltage and current in the secondary coil. Then explain why this would or would not work with DC (nonalternating current) in the primary coil.

Answers

Answer:

It is based on the principle of electromagnetic induction.

Explanation:

When a magnetic flux linked with a coil changes, an induced emf and induced current is developed in the coil. This phenomenon is called electromagnetic induction.

AC current is time varying sinusoidal current, but DC current is steady current.

When an AC current pass through the primary coil of transformer, the magnetic flux linked with the coil changes. This magnetic flux is linked with the secondary coil which is placed near to the primary coil. As the flux changes in the secondary coil, the induced voltage and current is produced in the secondary coil of transformer.

In case of DC current, there is no changing flux because DC current is steady current, so DC current would not work in case of transformer.
The right answer for the question that is being asked and shown above is that: "It takes a changing magnetic field to create an electric field. So if it was DC the magnetic field from the primary would be unchanging, and no voltage would be induced." 

If We Start With 400 Atoms of a Radioactive Substance, How Many Would Remain After One Half-life ?

Answers

If it's half life, that means that half of the atoms have died out. Therefore, 200 atoms have died, so there are 200 atoms left (exactly one half of 400)
200, the half life of a radioactive substance is pretty simple to remember. It is literally cutting it in half, however, don't make the same mistake I did in this subject, the second half life does not reduce it to 0, it reduces it to 100. It just keeps half-lifing over and over again. For example: 400 atoms after one half life:200, after two: 100, after 3, 50, and so on.
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