Answer:
c
Explanation:
What is force?????????
Answer:
a. s s
Explanation:
thats the bottom line cut stone cold said so
Answer:
Force is a push or pull upon an object from the object's interaction with another object.
Explanation:
Whenever there is an interaction between two objects, there is a force upon each of the objects.
Hope this helps and have a great day!
Explain The energy transformations that takes place as a skateboard coasting on a flat surface slows down and comes to a stop.
Answer:
Friction in the wheels transforms kinetic energy into thermal energy.
Explanation:
Cindy pours cool milk into a hot bowl of oatmeal and then stirs it with a room-temnperature spoon. Which substance will
have heat flow from it to the other substances?
O the milk
O the spoon
O the oatmeal
O the surrounding air
Need help please With this.
Answer:question 3:(W)
question 4:(c)
Source:trust me bro
During a phase change, thermal energy is changing and temperature is _______
also changing
staying constant
increasing
decreasing
Answer:
Decreasing
Explanation:
A phase change is occuring; the liquid water is changing to gaseous water, or steam. On a molecular level, the intermolecular forces between the water molecules are decreasing. The heat is providing enough energy for the water molecules to overcome these attractive forces.
How much energy is required to completely vaporize 250 grams of liquid water that is already at 100 degrees Celsius? Show your work & units. Expected Answer = 565,000 J
Answer:
564100J (~ 565000J) of heat energy is required.
Explanation:
The enthalpy of vaporization of water is 2256.4J/g, meaning that 2256.4J of heat is required to convert 1 gram of water at 100 degrees Celcius to steam at 100 degrees Celcius.
In your case, we have 250g of water at 100C and we want to vaporize it to steam (also at 100C).
This requires ΔH = 2256.4(250) = 564100J of heat energy.
Which’s a mixture
A. Propane
B. Carbon
C. Gasoline
D. Ozone
Answer:
Air is a mixture of approximately 80% nitrogen, 20% oxygen and a small amount of many other gases.
Explanation:
PLZ HELP IM FAILING SCIENCE
Scientists hope to use aerogels to aid in oil spill cleaning process by floating aerogels on water where oil has been spilled. For this to occur how would the density of aerogels compare to the density of seawater? a a. The mass of aerogels must be larger. b b. The volume and mass of aerogels must be larger c c. For the same mass, the aerogel must take up less space. d d. For the same volume, the aerogel must have a smaller mass.
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Answer:
Cleaning up oil spills and metal contaminates in a low-impact, sustainable and inexpensive manner remains a challenge for companies and governments globally.
But a group of researchers at UW–Madison is examining alternative materials that can be modified to absorb oil and chemicals. If further developed, the technology may offer a cheaper and “greener” method to absorb oil and heavy metals from water and other surfaces.
Aerogels, which are highly porous materials and the lightest solids in existence, are already used in a variety of applications, ranging from insulation and aerospace materials to thickening agents in paints. The aerogel prepared in Gong’s lab is made of cellulose nanofibrils (sustainable wood-based materials) and an environmentally friendly polymer. Furthermore, these cellulose-based aerogels are made using an environmentally friendly freeze-drying process without the use of organic solvents.
It’s the combination of this “greener"material and its high performance that got Gong’s attention.
“For this material, one unique property is that it has superior absorbing ability for organic solvents — up to nearly 100 times its own weight,” she says. “It also has strong absorbing ability for metal ions.”
Treating the cellulose-based aerogel with specific types of silane after it is made through the freeze-drying process is a key step that gives the aerogel its water-repelling and oil-absorbing properties.
What is a wet celled battery composed of? Give an example of a wet celled battery.
Answer:
A wet-cell battery is the original type of rechargeable battery.
An example of a wet cell battery is a lead-acid battery.
Explanation:
Red blood cells need iron. They store iron and typically contain more iron than the fluid around them does. Which action would show the blood cells doing active transport?
pushing iron out
bringing iron in
swelling
shrinking
Which of the following would not be a compound?
A. C6H12O6
B. (SO)4
C. H2O
D. Cl3
Answer:
[tex]cl3[/tex]
Explanation:
[tex]cl3 \: is \: an \: anion \: of \: chlorine \\ hope \: it \: helps \\ and \: pls \: mark \: as \: brainliest[/tex]
Compounds are formed by the combination of atoms of two or more different elements in a fixed ratio to each other. Therefore, Cl3 not a compound. Hence, option D is the correct answer.
Matter can be divided into two categories. Elements and compounds. An element contains particles of only one type which may be atoms or molecules. The compounds contain particles of two or more elements. Some main characteristics of compounds are,
• Homogenous
• Definite melting and boiling points
• Combines in a fixed ratio
• Pure substance
Hence, we can conclude, compounds contain two or more different elements. Therefore, option D is the correct answer.
Learn more about compounds here:
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Need help with this.
Answer: It's C
Explanation: All of the other reaction are physical reaction.
Help me out please? Thank you!
Answer: Continental climates are classified by whether that fluctuates a lot. Hot summer, Cold winters and Little rainfall are all characteristics of Continental Climates
Explanation:
What occurs in a chemical reaction?
Answer: A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products
Explanation:
Answer:
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products
Explanation:
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A teacher places a sample of calcium oxide, a white solid, into a container of water. Students observe the formation of bubbles in the container. Next, the teacher removes a sample of an unknown substance from the container. The data table compares the properties of calcium oxide, water, and the unknown substance.
Which conclusion about the unknown substance does the data support?
The picture is on another question of mine.
Answer:
ummm b i am pretty sure that it is the answer
The first person to answer this question CORRECTLY will get a BRAINLEST
A plant stands upright after being watered. This is an example of:
A) geotropism
B) a decrease in turgor pressure
C) phototropism
D) an increase in turgor pressure
Answer:
A) geotropism
Explanation:
I hope this helps!
Please give me brainliest!
:}
Answer:
Im pretty sure its d
Explanation:
Im srry if its wrong but I hope this helped and have a great day!
The image shows particles of salt dissolved in water.
How will the arrangement of salt particles most likely change?
Salt particles will move toward the left through diffusion.
Salt particles will move toward the left through active transport.
Salt particles will move toward the right through diffusion.
Salt particles will move toward the right through active transport.
Answer:
ITS C
Explanation:
what are the characteristics of the two systems of government in this region? Explain in detail.
Explanation:
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail. what are the characteristics of the two systems of government in this region? Explain in detail. what are the characteristics of the two systems of government in this region? Explain in detail. what are the characteristics of the two systems of government in this region? Explain in detail. what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
what are the characteristics of the two systems of government in this region? Explain in detail.
Answer:
space agency of the Republic of India, headquartered in Bengaluru. It operates under Department of Space (DoS) which is directly overseen by the prime minister of India while chairman of ISRO acts as executive of DoS as well. ISRO is the primary agency in India to perform tasks related to space based applications, space exploration and development of related technologies.[6] It is one of six government space agencies in the world which possess full launch capabilities, deploy cryogenic engines, launch extraterrestrial missions and operate large fleets of artificial satellites.[7][b]
The Indian National Committee for Space Research (INCOSPAR) was established by Jawaharlal Nehru[8] under the Department of Atomic Energy (DAE) in 1962, with the urging of scientist Vikram Sarabhai recognising the need in space research. INCOSPAR grew and became ISRO in 1969,[9] also under the DAE.[10][11] In 1972, the Government of India had set up a Space Commission and the Department of Space (DOS),[12] bringing ISRO under the DOS. The establishment of ISRO thus institutionalised space research activities in India.[13] It is managed by the DOS, which reports to the Prime Minister of India.[14]
ISRO built India's first satellite, Aryabhata, which was launched by the Soviet Union on 19 April 1975.[15] It was named after the mathematician Aryabhata. In 1980, Rohini became the first satellite to be placed in orbit by an Indian-made launch vehicle, SLV-3. ISRO subsequently developed two other rockets: the Polar Satellite Launch Vehicle (PSLV) for launching satellites into polar orbits and the Geosynchronous Satellite Launch Vehicle (GSLV) for placing satellites into geostationary orbits. These rockets have launched numerous communications satellites and Earth observation satellites. Satellite navigation systems like GAGAN and IRNSS have been deployed. In January 2014, ISRO used an indigenous cryogenic engine CE-7.5 in a GSLV-D5 launch of the GSAT-14.[16][17]
ISRO sent a lunar orbiter, Chandrayaan-1, on 22 October 2008, which discovered lunar water in the form of ice,[18] and the Mars Orbiter Mission, on 5 November 2013, which entered Mars orbit on 24 September 2014, making India the first nation to succeed on its maiden attempt to Mars, as well as the first space agency in Asia to reach Mars orbit.[19] On 18 June 2016, ISRO launched twenty satellites in a single vehicle,[20] and on 15 February 2017, ISRO launched one hundred and four satellites in a single rocket (PSLV-C37), a world record.[21][22] ISRO launched its heaviest rocket, Geosynchronous Satellite Launch Vehicle-Mark III (GSLV-Mk III), on 5 June 2017 and placed a communications satellite GSAT-19 in orbit. With this launch, ISRO became capable of launching 4-tonne heavy satellites into GTO. On 22 July 2019, ISRO launched its second lunar mission Chandrayaan-2 to study the lunar geology and the distribution of lunar water.
Future plans include development of the Unified Launch Vehicle, Small Satellite Launch Vehicle, development of a reusable launch vehicle, human spaceflight, a space station, interplanetary probes, and a solar spacecraft mission.
Explanation:
Jennifer is applying a constant force to swing a can on the end of a string, as shown here. If the can is moving around the circle at a constant speed, which statement correctly describes the motion of the can?
A.
The can accelerates at every point along the orbit and has changing velocity.
B.
The can has constant acceleration and changing speed.
C.
The can has constantly changing acceleration.
D.
The can moves at a constant velocity.
The statement that correctly describes the motion of the can is D. that the can move at a constant velocity.
Based on the information given, Jennifer is applying a constant force to swing the can. In this case, the force that's being acted on the can is at an unchanging rate.Also, the can is moving around the circle at a constant speed. This implies that the speed of the car reasons the same as it's neither increasing nor decreasing.Based on the information given above, since a constant force is applied by Jennifer, and the can is also moving at a constant speed, then the can move at a constant velocity.
In conclusion, the can move at a constant velocity
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fact check this please
Ceres is a rocky celestial body located in the main asteroid belt. It has a nearly spherical shape and orbits the Sun. There are several asteroids in its orbit. Based on this information, which type of body is Ceres?
A.
asteroid
B.
dwarf planet
C.
meteor
D.
planet ( I put A as the awnser)
The diagram shows a food web in a grassland.
What best describes the role of the grasshopper in the food web?
Group of answer choices
A primary consumer that is food for the lizard and hawk
A secondary consumer that is food for the lizard and hawk
A primary consumer that is food for a single predator, the lizard
A secondary consumer that is food for a single predator, the lizard
Answer:
I think it is a sorry if i'm wrong
Explanation:
Anne applies a force on a toy car and makes it move forward. What can be said about the forces acting on the toy car at the moment Anne applies the force?
Need help please With this.
DUDE- HOW IS THAT MIDDLE SCHOOL
Answer:
The volume of the sample is equal to the other sample's volume / 2 times 9 to the 14th power so that would be about 369.47 grams
Explanation:
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gold is the piece of metal which have larger mass.
Explanation:
because it is reactive in nature than copper
Compare the chemical reaction that causes the Statue of Liberty to look green with the chemical reaction that causes a bike to rust.
Both the situations are examples of corrosion. The green colour seen in statue of Liberty is due to the copper oxide formation whereas the resulting in bike parts is due to the formation of iron oxide in the surface.
What is corrosion?Corrosion is a chemical process by which the metals are destroying and change in colour. Metal surface when open to air or water will react with the oxygen forms corresponding oxides.
Corrosion is an electrochemical process where the oxygen acts as the anode and the metal surface cathode where the oxide deposits and the colour changes. Materials containing iron will react with oxygen forms a red iron oxide called rust which then completely corrode the metal.
Similarly, the statues are made of metal alloys containing copper. Copper also reacts with air or water forms the copper oxide which is green in colour that is why the statues are turning to a gree patchy colour over time.
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why is Galileo Galilei impotant?
Answer:
He provided a number of scientific insights that laid the foundation for future scientists. He also improved telescope that helped further the understanding of the world and universe.
Explanation:
Answer:it’s because Galileo Galilei is pretty much the father of today’s modern science
Explanation:
I hope this helps :)
A pitcher throws a softball toward home plate. When the ball hits the catcher’s mitt, its horizontal velocity is 32 meters/second. The softball’s velocity goes to 0 meters/second in 0.8 seconds when caught. If the softball has a mass of 0.2 kilograms, what’s the force of the impact? Use F = ma, where .
Answer:
To calculate the force of impact F, first lets calculate the acceleration a of the ball:
a=v/t where v is the velocity of the ball and t is time
a=32/0.8=40 m/s²
To get the force F we need the Newtons second law:
F=m*a where m is the mass of the ball and a is the acceleration.
F=m*a= 0.2*40 = 8 N
So the impact force is F= 8 N.
Explanation:
If you get this right, I'll teach you how to out pizza the hut :)
Answer:
Lightning rods (and the accompanying protection system) are designed to protect a house or building from a direct lightning strike and, in particular, a lightning-initiated fire, Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged. One way to discharge them is through a circuit, and An electroscope is an early scientific instrument used to detect the presence of electric charge on a body. It detects charge by the movement of a test object due to the Coulomb electrostatic force on it.
Explanation:
Im smart
The Moon takes about one month to orbit Earth. Based on what you have learned and know, there would be two eclipses (one lunar and one solar) every month. Do you think this is realistic? Explain why or why not.
Answer:
it would not be
Explanation:
because the moon doesn't always go into earth's shadow
Answer:
It's true that the moon goes around Earth every month, but it doesn't always get in Earth's shadow. The moon's path around Earth is tilted compared to Earth's orbit around the sun. The moon can be behind Earth but still get hit by light from the sun. ... This is why we don't get a lunar eclipse every month.
Explanation:
The medulla _____.
interprets signals from the sense organs
controls heartbeat and breathing
controls balance and digestion
coordinates muscle movement