Chemistry Middle School

Select all of the forces below that are noncontact forces.

Question 7 options:

Applied force


Magnetic force


Air resistance (drag) force


Tension force


Frictional force


Electric force


Spring force


Normal force


Gravitational force

Answers

Answer 1

Answer:

magnetic, electric, gravitational

Answer 2
Gravitational,Magnetic,Electric

Related Questions

What are two minerals that could not be identified by using just one property?

Answers

Color that’s the answer
Color. One of the most obvious properties of a mineral is color. Color should be considered when identifying a mineral, but should never be used as the major identifying characteristic.

A chemical equation is balanced if the number of each type of atom on the left side is equal to the number of each type on the right side. Is this reaction balanced?
(pls help me )

Answers

Answer:

nah its NOT

Explanation:

Answer:

yes a balanced chemical equation

it follows law of mass action that states mass can neither be created nor destroyed

Oceans can store large amounts of thermal energy. How does this affect climates?

Answers

Answer: It stabilizes the Earth's climate system

Explanation:

This tremendous ability to store and release heat over long periods of time gives the ocean a central role in stabilizing Earth's climate system.

What happens to the atoms that make up hydrogen fuel as it burns?

Answers

Answer:

When hydrogen fuel burns, its atoms combine with oxygen atoms in the air, which creates a chemical reaction that releases energy in the form of heat and light. The hydrogen atoms lose their outermost electrons, becoming positively charged ions (protons). These ions combine with the oxygen atoms to form water molecules (H2O), which evaporate into the air as steam. Therefore, the atoms that make up hydrogen fuel ultimately become part of water molecules during the process of combustion.

Explanation:

When hydrogen fuel burns, its atoms combine with oxygen atoms to form water molecules. So the atoms that make up hydrogen fuel become part of the water molecules.

DOES a single population have a lot of genetic diversity in it when it is always reproducing together?

Answers

Absolutely, all people are genetically unique compared to their parents due to different genetic combinations;even twins are genetically different

Part A: ____ objects are more dense
Part B: ____ Objects are less dense

Answers

Answer:

Part A: Solid objects with a greater mass per unit of volume are more dense.

Part B: Objects with a lower mass per unit of volume are less dense.

Explanation:

Not sure if this answers your question!

Answer:

A: solids

B: gases

Explanation:

Not sure if this is the answer you are looking for, but if it is hope it helps.

no problems

When Deshawn returned to his experiment, he observed these results. Six bottles labeled from 1 to 6 with their opening holes covered by balloons. Balloons on second and fourth bottles are inflated. Describe what you see in the results.

Answers

Answer: the second and fourth balloons have heat in them

Explanation:

Whenever there is heat in an object that hot gas rises and expands what ever is ontop of it like an air balloon.

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Answers

Answer:

1. Delete lion, bison, reindeer, and giraffe

2. Delete cactus, oak, evergreen,

Explanation:

1. Lions live in the African savanna, bison live in open fields with lots of grass, reindeer live in Antarctica and other very cold places, and giraffes also live in the areas of the African savanna where there are trees.

2. Cacti live in the desert, oaks and evergreens live in open grassy areas.

Hope this helps

I looked it up what the other guy said is true

Which statement describes how echolocation and ultrasound imaging are the same?

A. They both use the absorption of sound waves.
B. They both use the diffraction of sound waves.
C. They both use the reflection of sound waves.
D. They both use the transmission of sound waves.

Answers

The answer would be C.
The answer is C !!!

Two different elements that are chemically combined form a __________, while two different elements that are only physically combined form a __________.

Answers

Answer: Two different elements that are chemically combined from a compound, but two different elements that are physically combined form a mixture.

Hope this helped :D

Compound ; mixture
Hope this helps

Explain the energy transformations taking place in the diagram above. There are several.

Explain the energy transformations taking place in the diagram above. There are several.

Answers

the fire is evaporating the water

Answer:

chemical energy from the fire is turned into light and heat energy (thats all i can tell there is)

Explanation:

stars are far away. can you describe their distance in ordinary terms?

Answers

Answer:

Light years

Explanation:

Stars are away from the earth millions of kilometres away. It is not convenient to express such a large distance in the units of km. So, the distance of stars from the earth is expressed in light years. One light year is the distance that light travels in one year in a vacuum.


Hope my answer helps you ✌️

Please mark BRAINLIEST

Answer:

Amount of water:

✔ constant

Reaction rate:

✔ variable

Temperature:

✔ constant

Initial amount of tablet:

✔ constant

Particle size:

✔ variable

Why is it easier for most metal elements to gain electrons rather than to lose them?
PROPER EXPLANATION

Answers

Because it is easier for metals to shed their valence electrons and form cations for a stable configuration, they have comparatively few chances of acquiring electrons.

The metals usually complete their octet in each reaction. The outermost electron shell often contains more electrons in metals. Metal atoms lose electrons when they interact with other non-metals because the energy of an electron in its outermost shell is very weak.

Metals often have low ionization energy because their electrons are positive in nature. Metals lose their electrons and trade them with non-metals to achieve a stable configuration.

To know more about electrons in metals elements,

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Answer:

metals typically have relatively low ionization energies

Explanation:

i want a better example for this than what it gave please

i want a better example for this than what it gave please

Answers

King Phillip Came Over From Great Spain.

Pls help with this question thx guys ur so kind
Whoever gets the answer gets it right then I'll give u a branily badge!! (u know what I mean).

Pls help with this question thx guys ur so kindWhoever gets the answer gets it right then I'll give u

Answers

Answer:

Cell

Explanation:

cells forms tissues, which forms organ that are parts of an organ system

What caused the behavior of the plant in the diagram above?

What caused the behavior of the plant in the diagram above?
What caused the behavior of the plant in the diagram above?

Answers

What causes the behavior of the dying plant is that it´s either getting to much water and to little and needs more sunlight and heat and less coldness.

Answer:

c. excessive humidity

Explanation:

because there could be to little of heat or sunlight or to much or to little of water

Do magnets work underwater? How about in space? Explain your reasoning.

Answers

Answer:magnets work underwater the same as they do in air or in a vacuum.

Explanation : Water is almost completely non-magnetic, so magnets work underwater the same as they do in air or in a vacuum.

yeah, the magnetic force isnt changed by its environment since the environment is not magnetic at all

A graph with horizontal axis time (seconds) and vertical axis position (meters). An orange line runs straight upward from 0 second zero meters. A concave blue line runs upward from the same point. Maia says that both lines on this position vs time graph show acceleration. Is she correct? Why or why not?

Answers

Answer:

Let's start by using the definition of acceleration. Acceleration is defined as the change in velocity over the change in time. In equation, that would be Δvelocity/Δtime. Based on the axes of the given graph, it shows the trend of position over time. So, the slope of the line and the curve shows the change of position over change of time, Δdistance/Δtime. In physics, this is the definition of speed or velocity. So, Maia is incorrect. Both curves show the speed or velocity of the object, and not acceleration.  If the graph used a y-axis of velocity instead of position, then only at that instance, would be Maia be correct.

The difference between the two is, the straight line shows constant velocity while the curve line shows changing velocity.

Explanation:

Maria is incorrect because the line or curve shown in the graph gives value of velocity not of acceleration.

What is acceleration?

Acceleration of any object is dfine as the rate of change in velocity with respect to the distance.

According to the question, graph is plotted between time and distance so slope of the graph gives the value of change in position with repect to the time and this is used to define velocity as:

v = dx/dt

So, maria is incorrect.

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Amniotic egg is an egg that contains a f fluid-filled nucleus and a yolk sac

True or False
PLS HELP THIS IS FROM A UNIT TEST
science 30 points pls help

Answers

So for that one I’m going to go with True
the answer for this is TRUE

30 POINTSSSSSSSSSSSSS how is increasing the amount of sunlight most likely to affect an ecosystem? A. by increasing soil moisture B. by decreasing photosynthesis C. by increasing plant growth D. by decreasing the food supply

Answers

Answer:

here

Explanation:

The increase in sunlight up to a limit might result in an increase in the photosynthesis process as well as in transpiration. More amount of energy will be produced by plants.

C. by increasing plant growth.

Solve this please and thank you

Solve this please and thank you

Answers

Answer: You're welcome!

Explanation:

method 4 for number 1 , 3 , 4

method 3 for number 2

method 2 for number 1 , 3 , 4

Why are some incomplete fossils able to be pieced together? Full fossils of large animals can be found together. Hard tissue, like bone, never breaks or chips. Fossils require salt water to be preserved fully. Impressions from the skin can be preserved.

Answers

Answer:

Explanation:

The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.

Answer:

The fossil record is considered to be incomplete because fossilization is a very rare phenomenon. Most organisms decompose quickly after their death, and their remains are dispersed. In order for fossilization to occur, the remains have to be covered by sediments and stay undisturbed for thousands of years.

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

Phenomenon: The sound of tapping on your desk is much louder and lower pitched when you listen to it with your ear pressed against the desk.

1. Use what you have learned to explain this phenomenon.

Answers

Answer:

hi do you want to join my padlet?

Explanation:

What is the center of a plant cell? The actual question is what’s the center of an onions root tip?

Answers

The center of a plant cell is a nucleus!
A nucleus! That is where the plants DNA is stored :)

Please write an introduction for a SHE task of Fire-Stick Farming.

Answers

Aboriginal people systematically burnt vegetation to reduce fuel and encourage new growth to lure grazing animals for hunting.

Fire stick Managing the environment through farming Aboriginal people  routinely burned grass to minimise fuel and promote new growth in order to attract grazing animals for hunting.

Why is farming important?

Among the various ways that agriculture has an impact on society are the provision of food, habitat, and employment opportunities; the provision of raw materials for food and other goods; and the development of robust economies through commerce.

Why is farming beneficial to the environment?

A large number of species use pasture and crops as both a habitat and a source of food, making up around 50% of the planet's livable land. Sustainable management of agricultural operations has the potential to safeguard watersheds, restore significant habitats, and improve the quality of the soil and water supply.

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Put the number by which question you answer

1. Which of the following is a characteristic of mixtures?
a.Mixtures can only be in solid and liquid form.
b.Substances that are mixed together retain their properties.
c.You can always see the different parts of a mixture.
d.You can only see the different parts of a mixture when it is in liquid form.


2.What type of combination is a mixture?
a.Chemical
b.Electrical
c.Physical
d.Thermal


3.What is the difference between a heterogeneous mixture and a homogenous mixture?
a. A heterogeneous mixture can only be a solid, and a homogenous mixture can only be a liquid.
b. You can’t see the parts in a heterogeneous mixture, but you can in a homogeneous mixture.
c. You can see the parts in a heterogeneous mixture, but you can’t see them in a homogeneous mixture.
d. A heterogeneous mixture is a physical combination, and a homogenous mixture is a chemical combination.

4.What is a solute?
a. A homogeneous mixture
b. A mixture that can only be in a gas form
c. A mixture whose parts you can see
d. The substance that is dissolved in a solvent.

5.What is the role of a solvent?
a.It dissolves the solute in a mixture
b.It gets dissolved in a mixture
c.It helps mix solids together
d.It keeps the parts of a mixture separated

6.What is a liquid mixture whose parts are evenly blended?
a. A solute
b. A solution
c. A solvent
d.A heterogeneous mixture

7.What type of mixture is a fruit salad?
a. A solution
b. A homogeneous mixture
c. A chemical mixture
d. A heterogeneous mixture

Answers

1-B
2-C
3-B
4-D
That’s all I got
5. Is A
6. Is D
7. Is D

Carrying capacity is

A
anything that limits how many organisms can live in an ecosystem.

B
how green plants make carbohydrates.

C
the process of respiration.

D
the number of organisms an ecosystem can support

Answers

Answer:

I believe it's D

Explanation:

D because it makes the most sense

Are there any steps of the rock cycle that do NOT connect directly to one another? Explain why this may be the case using at least two examples.

please helpp

Answers

Answer:

rocks are destroyed

explanation

ricks are never destroyed they descompose

There are no steps in the rock cycle that do not connect directly to one another. The rock cycle describes the continuous process by which rocks are formed, weathered, eroded, transported, deposited, and lithified, leading to the formation of new rocks.

What are the steps in rock cycle ?

Each step of the rock cycle is interconnected and depends on the other steps. For example, the formation of sedimentary rocks requires the weathering and erosion of preexisting rocks, the transportation and deposition of the resulting sediments, and the lithification of the sediments into rock.

Without the weathering and erosion of preexisting rocks, there would be no sediment to form sedimentary rocks.

Similarly, the formation of metamorphic rocks requires the heat and pressure of burial and tectonic activity, which in turn is influenced by the existing rock formations and geological processes of the area.

Another example is the formation of igneous rocks, which can occur through the melting and solidification of preexisting rocks, or through volcanic activity.

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NEED THIS ASAP

Color is everywhere in nature. The arrows in the image model the wavelengths of visible light. Compare how the incoming colors of light behave when they encounter the kittens black fur, it’s white fur, the green grass, and the yellow dandelion

NEED THIS ASAPColor is everywhere in nature. The arrows in the image model the wavelengths of visible

Answers

Answer:

The black color absorbs all colors of light, the white reflects all colors of light, the yellow-orange flowers only reflect yellow and orange light, and the green grass only reflects green light. It is because they reflect certain colors of light that these objects display certain colors.

Explanation:

Other Questions
A factory machine was purchased for $385000 on January 1, 2021. It was estimated that it would have a $78000 salvage value at the end of its 5-year useful life. It was also estimated that the machine would be run 38000 hours in the 5 years. The company ran the machine for 3800 actual hours in 2021. If the company uses the units-of-activity method of depreciation, the amount of depreciation expense for 2021 would be Select the correct answer.Joel is conducting research about how crowdfunding can alleviate the financial burdens of teachers at low-funded schools. He found a recentlypublished article on this topic in an online, peer-reviewed journal.What piece information would make this online journal a credible source of information?.no copyright updatesOB.embedded website advertisements.website reviewsODthe author's qualificationsexternal links to other interesting articles. scientists believe that han chinese who live in low-altitude regions of china and tibetans who live at high altitudes in the himalayan mountains became genetically separated about 3,000 to 6,000 years ago. when han chinese try to live at high altitudes, their blood thickens as their bodies try to counteract the low oxygen levels by producing more red blood cells. some individuals have thinner blood and do not suffer from altitude sickness or infertility at high elevations. biologists have identified that many tibetans have an allele for a gene known as hypoxia-inducible factor 2-alpha (hif2a) that is rare in han chinese, and these individuals who possess the hif2a allele have thinner blood and do not suffer from altitude sickness or infertility at high elevations. the percent of each population that possesses the hif2a allele is shown in the table below. which of these best explains the difference in the frequency of the hif2a gene between the han chinese and tibetan populations? question 26select one: a. among tibetans who are exposed to lower levels of oxygen at high elevations, those who possess the hif2a allele are better able to survive and produce more offspring than those who lack the allele. b. there is a higher frequency of the allele among the tibetan population because the population is smaller and genetic drift has produced rapid change in the hif2a gene frequency. c. the lack of oxygen at high elevations has caused more mutations in the dna of the tibetan population, and this has resulted in tibetans becoming fitter than the han chinese because they possess the hif2a allele. d. both populations possessed the hif2a allele at a high frequency, but when the han chinese moved to lower elevations, the allele was lost, since it no longer provided a survival benefit to individuals who expressed the trait. The first three questions refer to the molecule 1H127I with a R=160 pm1. Calculate the energies of the first four rotational levels.2. What is the degeneracy of level 4?3. If an energy absorption occurs between the first two levels, what part of the electromagnetic spectrum will this be in MATHEMATICAL CONNECTIONS Write a polynomial that represents the area of the square.An area model. It has x, 7, and x along the length and x, 7, and x along the width. A 28% trade discount on a personal video recorder represents a discount of $120 from the suggested retail price. What is the net price to the buyer? The storming stage of group development is characterized by moderate development level, lower commitment, and some competence. True False I need help please. Find the volume of the composite solid. Which of these is an example of a central idea?Question 3 options:A description of the systems of the body.The human eye is a marvel of nature.The inner ear helps control a persons balance. 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