The Sun-Earth-Moon system can be modeled by using three balls. Whichstatement describes a benefit of this model?
O A. It can be easily manipulated to represent changes that occur
slowly.
O B. All parts of the entire solar system can be modeled in the same
way.
O C. The model shows only how moon phases happen.
O D. The actual Sun-Earth-Moon system moves too quickly to be
studied directly.
Answers
Final answer:
The Sun-Earth-Moon system model using three balls is beneficial because it can easily demonstrate changes that occur slowly, like the orbits and rotations of the Earth and Moon.
Explanation:
The model of the Sun-Earth-Moon system using three balls offers several benefits. However, the most accurate statement regarding its advantages is, it can be easily manipulated to represent changes that occur slowly (Option A). A few movements in this system, such as the rotation of the Earth and Moon, and their orbit around the Sun, occur relatively slowly. Therefore, a physical model can be used to demonstrate these movements exceptionally well. Other options are not accurate as this model does not represent all parts of the solar system (Option B), it does not only show moon phases (Option C), and the real Sun-Earth-Moon system doesn't move too quickly to be studied directly (Option D).
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Answer:
A. it can be easily manipulated to represent changes that occur slowly.
Related Questions
The half-life of thorium-227 is 18.72 days. How many days are required for three-fourths of a given amount to decay?I'm not quite sure how to set it up to even start working it? help would be appreciated! Thanks!!
Which equation represents a decomposition reaction?(1) CaCO3(s) ==>CaO(s) + CO2(g) (2) Cu(s) + 2AgNO3(aq) ==>2Ag(s) + Cu(NO3)2(aq) (3) 2H2(g) + O2(g) ==>2H2O(l) (4) KOH(aq) + HCl(aq) ==>KCl(aq) + H2O(l)
How many days are required for 200. grams of radon-222 to decay to 50.0 grams?(1) 1.91 days (3) 7.64 days(2) 3.82 days (4) 11.5 days
What happens when the number of electrons and protons inside of an atom are Not equel?
Answers
Answer :
There are three processes involved in the conversion of ethane to ethanoic acid.
In first process, on the chlorination of the ethane in the presence of the sunlight or in the presence of U.V light, ethane converted into ethyl chloride.
In the second process, ethyl chloride react with the aqueous potassium hydroxide to give ethanol.
In the third process, ethanol react with an oxidizing agent (Alkaline potassium permanganate) to give ethanoic acid.
The reaction are shown below.
C2H6 + Cl2 ---> C2H5Cl + HCl
C2H5Cl+KOH-> C2H5OH+ KCl.
C2H5OH ----KMnO4 ---> CH3COOH.
B. A 2 kg pot at 120°C
C. A 5kg pot at 25°C
D. A 2 kg pot at 25°C
Answers
Final answer:
The 2 kg pot at 25°C has the least thermal energy because it has both a smaller mass and a lower temperature than the other options.
Explanation:
The thermal energy of an object is related to both its mass and its temperature. In this case, we are considering iron pots of different masses and temperatures. Given the options, the 2 kg pot at 25°C would have the least thermal energy. This is because it has both a smaller mass and a lower temperature than all the other options listed.
The thermal energy is calculated by multiplying the mass, specific heat, and change in temperature. An object with a smaller mass and lower temperature would therefore have less thermal energy.
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Answer: D. A 2 kg pot at 25C.
Explanation:
Answers
The symbol of an isotope that atom of its element contains 50 electrons and 70 neutrons is Tin (Sn).
What is Isotope?
The Isotope may be characterized as one of two or more types of atoms of a chemical element that significantly have the same number of protons but with different numbers of neutrons and therefore different atomic masses.
In a more simple sense, an isotope may be defined as an atom that has the same atomic number but different atomic mass and physical properties.
According to the question,
The number of electrons an atom possesses = 50.
The number of neutrons = 70.
Since, the number of electrons = the number of protons = the atomic mass of an atom = 50.
∴ According to the periodic table, an element having an atomic number of 50 is known as Tin (Sn).
Its atomic mass = the number of protons + the number of neutrons.
= 50 + 70 = 120 amu.
Therefore, the symbol of an isotope that the atom of its element contains 50 electrons and 70 neutrons is Tin (Sn).
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Answers
Answer:
The correct answer is Option (2)- Burning up of fossil fuels
Explanation:
Fossils are the remnants of the ancient plants and animals that were buried millions of years ago. Those fuels that are made up of these fossilized matters are commonly termed as fossil fuel. For example, Petroleum, Coal and natural gas. These are the major source of energy.
These fossil fuels are limited in amount and are non-renewable sources of energy. These are exploited rapidly by human beings. This burning up of fossil fuels leads to the production of a large amount of Carbon dioxide (CO₂) gas that causes a significant impact on the atmosphere. The increase in the CO₂ content also leads to an increase in the global temperature of the earth.
In the last 100 years, the CO₂ level in the atmosphere has immensely increased.
Hence, the correct answer is option (2).
B: thermochemical reaction
C: nuclear reaction
D: chemical reaction
Answers
Answer: Option (C) is the correct answer.
Explanation:
When two nuclei and a subatomic particle like proton, neutron or high energy electron collide with each other then it results in the formation of two or more different nuclides.
For example,
Whereas in an electrochemical, thermochemical and chemical reaction there occurs change in number of electrons and not in number of protons or neutrons.
Thus, we can conclude that a change in the number of protons or neutrons occurs in nuclear reaction type of reaction.
A change in the number of protons or neutrons occurs inwhich type of reaction? A change in the number of protons or neutrons occurs innuclear reaction. The answer is letter C. The rest of the choices do not answerthe question above.
Answers
NH₃ = 17.031 g/mol
hope this helps!