What characteristic of an element determines how its atoms can bond with other atoms?
A. its total number of electrons
B. its number of valence electrons
C. how many low-energy-level electrons it has
D. how many protons and neutrons it has
50 brainly points!
Answer:
The answer is A
Explanation:
its total number of electrons
Which type of electromagnetic energy must be used carefully in medicine so it does not damage living tissue?(1 point)
low frequency waves
visible light
radio waves
gamma rays
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, gamma rays is used carefully in medicine without damaging living tissue.
What is electromagnetic wave?Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave.
There is a relation between energy of wave. frequency of wave, and wavelength of wave
Mathematically,
E=hc/λ
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
c is speed of light that is 3×10⁸m/s
λ is the wavelength of electromagnetic wave
There are many uses of electromagnetic radiations in medical field. Gamma rays are used to kill the dead cells from e.g. cancer but they don’t destroy the living cells as gamma is only a wave.
Therefore, gamma rays is used carefully in medicine without damaging living tissue.
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Movement caused by warmer fluids rising and cooler fluids sinking is called ______________.
Answer:
I think it's Convection current.
Hope that helps. x
Answer: Convection is the process of warm fluids rising and cooler fluids sinking. Inside the Earth, convection is powered by heat mostly from the core. The slow circulation of rock in the mantle moves the tectonic plates at the surface.
Explanation: Can I have brainliest
Explain The process of Photosynthesis according to the chemical formula: Identify: The reactants(input), the products(outputs), and the energy source. **(Hint: Carbon Dioxide + Water = Glucose + Water)
Answer: 6CO2 + 6H2O → C6H12O6 + 6O2
Explanation:
The equation for photosynthesis is 6CO2 + 6H2O → C6H12O6 + 6O2.
im giving brainliest
Answer:
a
Explanation:
just needed the points, sorry
Answer:
I'm confused what is this?
Explanation:
I need help, ACTUAL ANSWERS PLEASE
ASAP i need a picture of Pangaea
Answer: I hope this helps!
For her farm, Susan is interested in increasing the number of chickens that lay the most eggs per week. Many of the chickens on her farm lay 6 eggs a week. A few female chickens (hens) lay as many as 8 eggs per week, while other female chickens only lay 4 eggs per week. Describe what Susan can do to increase the number of eggs produced on her farm.
Answer:
Susan should probably Quality Feed the chickens.
Explanation:
Quality Feed has a special formula that helps the hens have more. It also makes them big. You don't have to go crazy with some cutting-edge feed that's guaranteed to make your chickens produce eggs the size of a garden gnome
I'm not sure this is the answer that you want so I'm sorry if it isn't
need help ASAP
Write a sentence that begins an adjective phrase. Be sure to punctuate it properly!
PLEASE HELP!!! I will mark Brainliest!!! How could you know if two substances were the same based upon 2 chemical reactions?
Answer:
Observing what the substance looks (color, size, texture) or smells like (odor). Objects can be made up of the same substance, but they differ in the properties of size, mass, and volume.
Explanation:
The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories. Some reactions will fit into more than one category.
Answer:
1.Color Change.
2.Production of an odor.
3.Change of Temperature.
4.Evolution of a gas (formation of bubbles)
5.Precipitate (formation of a solid)
What source did you use the most in your research? What was the name of the source? Where did you find this source (book, newspaper, magazine, online)? How do you know that this source is trustworthy?
HELPPPPP PLEASEEEEE
Answer:
Can you show more information please?
Explanation:
The personal experiences, print media like books, pamphlet, journals, magazines, and newspapers, as well as electronic sources accessed via the Internet, can all be used as research resources.
What do you mean by research ?Research is a systematic inquiry process that includes data gathering, documentation of important information, analysis, and interpretation of that data and information in accordance with appropriate procedures established by particular academic and professional disciplines.
You can use databases and search engines like Scholar to look for academic sources online. They offer a variety of search options that might assist you in locating the most pertinent sources. Include the title or the author's name in your search if you're looking for a specific article or book.
The primary publication format for scholarly research is scholarly journals. Students can read the majority of intellectual articles online and through library databases.
Thus, These can also come from polls and interviews that you or another else conducts.
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The magnetic field of an object exerts a force on any magnetic object around it.
True
or
False
What class of lever is shown below?
Question 3 options:
First Class Lever
Second Class Lever
Third Class Lever
Forth Class Lever
What class of lever is shown below?
Question 4 options:
First Class Lever
Second Class Lever
Third Class Lever
Fourth Class Lever
4
I don't want to say anything else
The magnetic field of an object exerts a force on any magnetic object around it.
True or False
Answer: True
Explanation: this is true
Which two changes of state can occur when a substance gains thermal energy A sublimation b depositation c condensation and d vaporization
Answer:
b
Explanation:
Answer:
A and D
Explanation:
I got it on my test
What would happen to the gravity between two objects if the mass of one object decreased?
1. gravity would increase
2.gravity would decrease
3. wouldn't change
PLz help
3.How are climate and weather different?
4.How can you depict annual precipitation at a site location, like a local airport?
5. What is the transformation of water vapor to liquid water droplets in the air?
Climate is different from the weather. Climate is the long term weather condition and weather is short term atmospheric condition. The annual precipitation is report is depicted as graphical data. Transformation of water vapor to liquid droplets in air is called condensation.
What is climate?Climate in a region is the long term weather exists there and which will be characteristic for that region. Weather is forecasted for a day or a particular time, reporting the short term atmospheric condition. Climate of a locality depends on the landscape there, local winds etc.
The annual precipitation report determined by the summation of monthly precipitation data and which in turn obtained by the summation daily precipitation for each month and it is depicted graphically to analyse.
The transformation of water vapor to liquid droplets in the air is called condensation. The gaseous molecules of the water vapor condense together to form the liquid droplets.
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If a chromosome folds, how is transcription prevented?
Question 2 options:
The DNA region is easily accessible.
The DNA region is not easily accessible.
The RNA region is not easily accessible.
The RNA has already been made.
Answer:
The DNA region is not easily accesible.
Explanation:
What is the best description of cirrus clouds?
Question 5 options:
High level (altitude) clouds that are white and wispy like horses tails.
Low level (altitude) clouds that are wispy and made of ice crystals.
Middle level (altitude) clouds that are thick and spread out like a blanket.
Middle level (altitude) clouds that are white and puffy with flat bottoms.
Answer:
i think that the best description of cirrus clouds is the the third option
Explanation:
i hope this helps you!
pros and cons about making aluminum?
HELPPP PLEASEEEE
Pros: easy to make,Cheap, Flexible
Cons: Cheap and flimsy, easy to break
In humans, tongue rolling is dominant over non-rolling. A man who can roll his tongue marries a woman who cannot. They have 8 children, of which 6 can roll their tongue. What is the genotype of these 6 children? Why?
Answer:
50% cant roll their tounge
Explanation:
What are two results of the uneven heating of Earth's surface?
PLZ HELP ASAP
Pretend you are teaching a friend about the differences between plant and animals cells. Your friend isn’t even sure they know there is a difference between the types of cells.) Write a narrative of what you would say to your friend to explain how the plant and animal cells are different from each other and why these differences are important.
Answer:
plant cells and animal cell have similaritys but also haev diffrences.
Explanation:
one example of a diffrence bettwen them is that plants have a cell wall but a animal doesnt even tho they are both living organizoums
Which electromagnetic wave has a lowest frequency?
ultraviolet light
visible light
microwaves
x-rays
infrared light
Answer:
microwave
Explanation:
Microwaves as the lowest frequency in the list.
NEED ASAP
What is the affect of increasing the temperature of the water?
What happens when you add pollution to the water?
Can coral survive bleaching?
What is coral?
Answer:
Explanation:
Increasing temp in water makes it start to boil and evaporate into the atmosphere, in terms of climate change it makes it hard for many organisms to survive because they have to adapt quickly to the waters rapidly rising temperature. When you add pollution to water the water would become contaminated and not be able to support life or be fit for human consumption.
Coral cannot survive bleaching because it harms the coral to the point of its destruction.
Coral is an animal that can grow into big reefs that create large ecosystems for many organisms. They are in the ocean. The biggest coral reef is the great barrier reef in Australia.
NEED HELP ASAP!!!!!!!!! PLEASE ANSWER IN 10 minutes or under
What are the two possible benefits of the new plastic bag?
Answer:
The new bag helps food last longer. Less food is wasted, and more money is saved.
Explanation:
PLATO
I need help with this
Answer:
The mass and physical structure of the body has changed.
The amount of molecules has changed and formed a new substance.
Explanation:
Hope that I helped you!
Which gas is not a significant contributor to greenhouse gasses.?
A. Carbon Dioxide
B. Hydrogen
C. Methane
D. Nitrous oxide
Answer:
C. Methane.
Explanation:
Methane is a chemical that can kill you. A, B and D all won't kill you because that is a significant contributor to greenhouse gasses.
hope this helped.
Many businesses are using infrared thermometers to check customer's temperatures as they enter. What are the benefits of using these thermometers? (Select all that apply.)
They check temperature using thermal energy waves that people give off.
They don't have to touch the person to accurately find their temperature.
They check temperature using UV light that people give off.
They have to touch a person to accurately find their temperature.
Answer:
Pretty sure B is one of them.
Explanation: