Answer:
Radiation is the emission of energy through space in the form of particles and/or waves. Nuclear reactions are very different from chemical reactions. In chemical reactions, atoms become more stable by participating in a transfer of electrons or by sharing electrons with other atoms.
Radiation is said to be the transfer of heat between two objects without any medium between them , that can help them in heat transfer . Hence radiation is said to be the direct transfer of heat between two objects . For example the heat we get from the sun can be said to be from radiation as there is nothing between us and the sun that is helping the sun's heat reach us . The sun's heat reaches Earth directly . This is an example of radiation; which is a type of heat transfer .
HELP! DUE NEXT PERIOD!
A puddle of water that Kim observed on the way home from school had frozen by the next morning. what caused this change?
A. Energy was removed from the water molecules
B. Attractions between the water molecules decreased
C. The volume of the water was reduced
D. The water has undergone a chemical reaction
Answer: A
Explanation: the energy in the water has faded and then with the removal of energy often comes a state change
Can somebody help me with this, please? Please Asap
Answer:
im not sure what exactly you want? if its answering the questions then search up each one and rephrase the answers you get, for instance for mitochondria is the powerhouse of the cell. just write something simple thats what i did when i had to do something like this it took only a couple of minutes
Explanation:
The Organelles help the cell to function efficiently.
What are the organelles in the cell?I can see that your question has to do with the organelles in the cell but I don't quite get the analogies that you intend to use. However, I would explain the organelles one after the other.
Endoplasmic reticulum: The endoplasmic reticulum (ER) is a network of membranous tubes and sacs within the cytoplasm of eukaryotic cells. It serves as a transport system for proteins and lipids, as well as a site for folding and modification of newly synthesized proteins.
Ribosomes: Ribosomes are complex molecular machines that are found in the cytoplasm of all living cells. They are responsible for synthesizing proteins from amino acids, which are the building blocks of proteins.
Mitochondria: These are organelles found in the cytoplasm of eukaryotic cells. They are often referred to as the "powerhouses" of the cell because they are responsible for producing most of the cell's energy in the form of ATP (adenosine triphosphate).
Vacuole: Vacuoles are membrane-bound organelles found in eukaryotic cells. They are large, fluid-filled compartments that serve several important functions within the cell, including storage of nutrients and waste, regulation of the cell's water balance, and maintenance of cell shape.
Cytoplasm: Cytoplasm is the gel-like substance that fills the interior of eukaryotic cells, excluding the nucleus. It is a complex mixture of water, ions, organic molecules, and a variety of cellular structures, including organelles such as mitochondria, ribosomes, endoplasmic reticulum, and lysosomes.
Lysosomes :Lysosomes are membrane-bound organelles found in eukaryotic cells. They are referred to as the "garbage trucks" of the cell because they are responsible for breaking down and recycling cellular waste and unwanted material.
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which is a mixture?
A. Water reacting with oxygen
B. Salt dissolved in water
C. Sodium and chlorine in a molecule
D. A solid aluminum pan
Answer:
B. salt dissolved in water
Explanation:
a mixture is multiple substances mixed together
will give brainliest
Answer:
800 calories
Explanation:
It takes 80 calories to melt 1 gram of ice. If 1 g of ice (at 0 degrees Celsius) is given 80 calories. Freezing water at 0 degrees Celsius is vis versa.
Answer:
800 calories
Explanation:
hope this helps :)))
What is the name given to this group of elements?
a.
halogens
c.
transition metals
b.
alkali metals
d.
noble gases
Answer: The answer is A. Halogens
Explanation:
I hope this helps you :)
People use hot air balloons to rise high above the ground and be pushed by air currents from one place to another. The diagram shows a hot air balloon.
A type of chemical reaction, called combustion, takes place between propane and oxygen in the burners.
a. Describe a likely result of this chemical reaction that allows a hot air balloon to rise.
b. Describe a design feature the distance a hot air balloon can travel. Explain your reasoning.
Fueled by propane cylinders, gas jets produce the hot air that fills the envelope (similar to ones you might use on a portable camping stove).
WorkingSince heated air rises, hot air balloons are functional. with the rest. As though it were floating in water, the balloon rises as a result of this. The balloon naturally starts to slowly deflate if the air is allowed to cool.The molecules in the air start to migrate and spread out as the air within the balloon is heated, which results in a decrease in the air's density. The heated air is pushed below the cooler, surrounding air. the warm air is pushed upward as a result of this.For more information on hot air balloon kindly visit to
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is tin IV cyanide ionic or covalent
Answer:
ionic
Explanation:
When citric acid reacts with baking soda, a salt, water and a gas are produced. What is the name of the gas?
a) carbon dioxide
b) oxygen
c) sodium citrate
d) water vapor
Answer:
The answer is A
Explanation:
what are the first 3 rules that Newton made??
Answer:
Newton's Laws of Motion
Explanation:
1st- Inertia- every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.
2nd- The second law states that the greater the mass of an object, the more force it will take to accelerate the object
3rd- action reaction- If the forces are equal in opposite directions, the object will not move. The forces cancel each other out so that the acceleration is zero. If one force acting in one direction is greater than the force acting in the opposite direction, the object will move.
Lab Report
Ocean Currents
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U2_ Lab_OceanCurrents_Alice_Jones.doc).
Introduction
What was the purpose of the experiment?
Type your answer here:
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Type your answer here:
Write the procedure you followed for the second part of the experiment. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how temperature and salinity affect the flow of water. Write an evidence-based claim.
Type your answer here:
Draw a diagram (develop a model) that shows what happens when warm water mixes with cold water in the ocean. Use your model to explain how this causes ocean currents.
Type your answer here:
Ocean currents are large-scale movements of water within the ocean, driven by a combination of factors such as wind, temperature, salinity, and the Earth's rotation.
What conclusions can be drawn about how salinity and temperature affect water flow?As water becomes colder, it becomes denser and sinks, while warmer water rises to the surface. Similarly, as the salinity of water increases, its density increases, and it sinks, while less salty water rises to the surface. These density differences create circulation patterns, such as ocean currents and deep water circulation, which can have a significant impact on the distribution of heat, nutrients, and other important factors in the ocean environment.
An evidence-based claim that can be drawn from this information is that changes in temperature and salinity can have significant effects on the flow of water in the ocean. For example, if temperatures in a particular region of the ocean were to increase, it could potentially cause the water to become less dense and rise to the surface, which could disrupt ocean currents and affect the distribution of nutrients and other important factors. Similarly, changes in salinity, such as those caused by freshwater influx from rivers or melting ice, could also affect the density of ocean water and impact circulation patterns.
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What are the physical properties of the cookie/cracker? List 3 or more.
Answer
cookie
shape:circle
texture: bumpy rough on side
color:brown
size: bigger than a quarter
Explanation:
I cant see it so just describe the color shape size texture
Answer:
1. Delicious
2. Soft
3. Cronchyy (ik its crunchy )
4. Best foods you will ever eat
Explanation:
Try it for yourself!
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Answer:
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Answer:
A. 1.67×10^-24
Explanation:
1. the rate of change in an object's position over time is called what
2. the type of energy that is the sum of kinetic and potential energy at any given time is what
3. A push Or pull that can change the motion of an object (examples: magnetic force, frictional force. Please Help me this is due tomorrow
Answer: 1 . velocity 2. total mechanical energy. 3. magnetic force
Answer:
1. Rise over run, slope, or velocity
2. Mechanical Energy
3. Temperature
It is a broad question
(1.) If at 100.0 mL solution contains 0.850 moles of a solute, what is the molarity ?
(2.) If the molarity of a solution is 12 M and the volume of the solution is 1.0 L, how many moles of solute does the solution contain ?
Answer:
See below
Explanation:
1) Moles / volume
.85 mole / .1 liter = 8.5 M
2) 12 moles are contained in one liter
Which of the following statements correctly explains why physical properties of a substance can be used to separate mixtures?
1. When substances are mixed together, they retain their physical properties.
2. When substances are mixed together, you can see each individual component
3. When substances are mixed together, the mixture assumes the physical properties of each individual substance.
4. Mixtures contain different substances with different properties and chemists can separate one item from the mixture by forcing it to undergo a chemical change.
Answer:
4) Mixtures contain different substances with different properties and chemists can separate one item from the mixture by forcing it to undergo a chemical change.
Explanation:
Mixtures contain different substances with different physical properties, such as boiling point, melting point, solubility, density, and so on. These properties can be used to separate the individual substances in the mixture through various techniques. For example, distillation is a separation technique that relies on differences in boiling points of the substances in a mixture. When a mixture is heated, the substance with the lower boiling point will vaporize first, and it can be collected and cooled to form a pure substance. Similarly, other techniques such as chromatography, filtration, and crystallization also rely on differences in physical properties to separate mixtures.
On the other hand, chemical changes involve the rearrangement of atoms within a substance, resulting in the formation of a new substance with different properties than the original. While chemical changes can be used to synthesize new substances, they are not typically used to separate mixtures.
How does most ocean water return to the ocean in the water cycle?
Through precipitation over the ocean
By flowing through rivers and streams
Through runoff on Earth's surface
By wind blowing water back to the ocean
Answer:
Explanation:
Water eventually returns to the ocean as precipitation that falls directly into the sea and as precipitation that falls on land and flows to the ocean through rivers. Less water evaporates over the land than falls onto land as precipitation.
1. Find the volume ( cm3) of oxygen in: a. 1000cm3 of air b. 50 cm3 of air.
Answer:
A. 210 cm³
B. 10.5 cm³
Explanation:
It is important for us to note that air contains 21% of oxygen, O2. With this idea in mind, let us answer the questions given above.
A. Volume of air = 1000 cm³
Volume of O2 in air =.?
Percentage composition of O2 in air = 21%
Volume of O2 = 21% x 1000
Volume of O2 = 21/100 x 1000
Volume of O2 = 210 cm³
Therefore, the volume of O2 in 1000 cm³ of air is 210 cm³.
B. Volume of air = 50 cm³
Volume of O2 in air =.?
Percentage composition of O2 in air = 21%
Volume of O2 = 21% x 50
Volume of O2 = 21/100 x 50
Volume of O2 = 10.5 cm³
Therefore, the volume of O2 in 50 cm³ of air is 10.5 cm³.
Help!!!
This is the last stage and I don't want to screw this up! :(
Which of the following solutions is more dilute?
A.The solution with 10 grams of honey and 100 mL of water.
B.The solution with 5 grams of honey and 100 mL of water.
C.The solution with 15 grams of honey and 100 mL of water.
D.The solution with 20grams of honey and 100 mL of water.
Answer: the solution with 5 grams of honey and 100 mL of water
Explanation:
Design an investigation that supports the claim that an increase in voltage OR an increase in the number of coils in an electromagnet, has an affect on the strength of the electromagnet. Be sure to include:
1. Problem/Question
2. Possible Data Table/Chart
3. Conclusion paragraph including data AND the effect of the increase in voltage or number of coils.
Answer:i dont know
Explanation:
What are the 4 main types of chemical reactions examples of each
Synthesis reactions.
Decomposition reactions.
Single-replacement reactions.
Double-replacement reactions
Explanation:
Answer:Type of Reaction General Reaction
Synthesis or Combination A + B → AB
Decomposition or Analysis AB → A + B
Displacement, Replacement, or Substitution A + BC → AC + B
Double displacement, Double replacement, or Metathesis AB + CD → AD + CB
Project on Gertrude B. Elton
Question + Context: She made medicine drugs like acyclovir and azathioprine (synthetic materials). What natural resources were used to make these?
Answer:
Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water. Animals, birds, fish and plants are natural resources as well. Natural resources are used to make food, fuel and raw materials for the production of goods.
Answer:
1
Explanation:
one example of a thermal conductor
3. Which action describes a physical change? A. Boiled egg B. Cracked egg C. Fried egg D. Scrambled egg
Are pterosaurs more closely related to turtles or to crocodilians? Explain your answer.
(sorry for spam questions i need help so i can get a higher grade in science)
Answer:
Pterosaurs are more closely related to crocodilians. They share a more recent common ancestor than do pterosaurs and turtles.
Explanation:
Hope this Helps! :)
Which is not one of the benefits of biodiversity?
Economic value
Uniform genetics in a species
Survival of species in the ecosystem
Cultural value
In total honesty I'll say economic value
Answer: Uniform genetics in species
Explanation:5 of the benefits of biodiversity is economic value,ecological life support, cultural value , recreational value, scientific value
A and D are out and c is the same thing as ecological life support.
In an electrical wire, if instead of copper, plastic wire is used. Would it conduct electricity?Justify your answer.
Answer:
No, a plastic wire would not conduct electricity. This is because plastic is an insulator that does not allow electric current to flow through it. In a wire, electrical conductivity is provided by the movement of charged particles - typically, electrons. Copper is an excellent conductor of electricity because it has a high number of free electrons that are not bound to atoms and can move through the wire very easily. However, in a plastic wire, the tightly bound electrons of its atoms do not allow for the free flow of charges, thus preventing the passage of electric current.
Which element is represented by this model?
Be; Beryllium
N; Nitrogen
C; Carbon
F: Fluorine
Answer: C; Carbon
Explanation: The model is showing it has 6 electrons, 6 protons, and 6 neutrons. Therefore the element, carbon.
Answer:
Carbon
Ok it needs more characters
explain the difference between the 3 types of galaxies
elliptical galaxies
spiral galaxies
barred spiral galaxies
There is quite a big difference between a barred spiral galaxy and an elliptical galaxy.
The image attached below shows a barred spiral galaxy, NGC 2217. In barred spiral galaxy there is large bar like structure across the core of the galaxy , and on the terminal end there are the spiral arms of the galaxy. It is believed that the bar plays a role of material transportation to the core. The bar funnels in the surrounding material toward the SMBH at the core. The arms of the barred spiral galaxy often host high star formation rate as seen in the image below. The bar is often consist of dust and old stars.Where as in elliptical galaxy, the galaxies are somewhat diffused and also they don’t host much of the new stars. Elliptical galaxies are often unbounded. Elliptical galaxies are believed to be formed from several mergers and that’t the reason for their inability to form new stars.
Hope it will help
I know this is very big answer
What role do bacteria play in healthy soil?
A. They help keep the soil loose enough for plant roots to grow.
B. They provide stability for the plants in the soil.
C. They hold tiny pockets of air so roots can breathe.
D. They help break down minerals in the soil into a form that plants can absorb.
Answer:
B I think
Explanation:
improved soil structure and soil aggregation, recycling of soil nutrients, and water recycling.