Which graph above shows an object’s acceleration? 1pt


a or b

and why did you choose the graph

Answer:

Only one

Explanation:

Answer: Gas

Explanation:

Gas. The arrows represent direction. They are moving around in the box extremely fast, and are not compact like a solid or liquid.

Answer:

Liquids and solids have constant volumes

Explanation:

I believe this is the most correct statement

Answer:

Volume is a physical property of an object.

One unit of volume is the milliliter.

Liquids and solids have constant volumes.

Hope this helps <3

Explanation:

Answer:

Answer is C.

Explanation:

I hope it's helpful!

Answer:

Gravitational force is given by:

F=G×

d

2

m×M

Distance between two masses is increased s.t. new distance is D= 5 d

New gravitational force F

1

=F

Let on of the mass is changed to m

1

so as to maintain the same gravitational force.

Answer:

D

Explanation:

F g increases by 25 times

Answer:

2:Fission occurs in a nuclear power plant. The energy produced comes in the form of heat.

Explanation:

Nuclear fission regularly occurs in nuclear power plants. The energy produced is in form of heat energy which is used for a wide range of purposes.

Nuclear fission is the radioactive decay process in which a heavy nucleus spontaneously disintegrates into 2 lighter ones and several neutrons with the release of a large amount of energy.

This reaction is utilized by nuclear power plants to generate electricity.

Answer:

number 2

Explanation:

Give other person brainly they deserve it.

The number of molecules= 3.55 x 10²⁴

Given

5.9 moles of NaCl

Required

The number of molecules

Solution

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

So for 5.9 moles :

= 5.9 x 6.02 x 10²³

= 3.55 x 10²⁴

Answer:

A. A new substance

Explanation:

sorry if its wrong if its right your welcome <3

Answer: friction between a car's windshield and the air as you drive into the wind.

Explanation: Hope this helps :)

They break down rotting materials and return nutrients to the soil.

( They don't do photosynthesis since they are much different from plants)

Answer:

B

Explanation:

Answer:

1 : the chance or possibility that something will develop and become real There is a potential for injury. 2 : an ability or quality that can lead to success or excellence : promise She has great potential as a musician.

Explanation:

Answer:

potential: possessing or demonstrating the ability to evolve into or become something in the future.

OAmalOHopeO

Answer:

Percent yield = 85.23%

Explanation:

Given data:

Theoretical yield = 7.99 g

Actual yield = 6.81 g

Percent yield of CaO = ?

Solution:

Formula:

Percent yield = ( actual yield / theoretical yield ) × 100

by putting values,

Percent yield = (6.81 g/ 7.99 g) × 100

Percent yield = 0.8523× 100

Percent yield = 85.23%

Answer: 26kj

Explanation:

Just took the test and got it right :D

Answer:

9.0217g

Explanation:

Answer:Potassium react with elemental chlorine, an electron transfers from a potassium atom to a chlorine atom, forming potassium ion and chloride ion. ... As the bond formation between ions, the bond will be ionic. This is because, this process of transfer of electrons from one atom (K) to another atom (Cl).

Explanation:

Answer:

Pollution

•The number of trips one takes in a car should be reduced.

•Reduce or eliminate fireplace and wood stove use.

•Burning leaves, trash, and other materials should be avoided.

•Using gas-powered lawn and garden equipment should also be avoided.

In an ecosystem, pollution is  a human activity that impacts the land negatively.Minimum use of vehicles and emission of smoke can help reduce the effects caused by the activity.

An ecosystem is defined as a system which comprises of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through  means of nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the ecosystem .Living organisms also influence the quantity of biomass which is  present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

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Answer:

Heat change is involved in both process.

II. Both result in change of state of matter

Explanation:

Physical change substance involves the alteration of physical state of a substance. Chemical change substance involves the alteration of the chemical composition of the substance

Answer:

The answer is melting and freezing point.

Explanation:

Answer:

A i just did it. And yes i do go to k12

Explanation:

They both have a different number of moles

Given

40 g HCl

40 g NaHCO3

Required

moles

Solution

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

n = mass : molar mass

So the moles of a compound are affected by its molar mass (inversely proportional)

The larger the molar mass (of the same mass), the smaller the moles

molar mass HCl = 58.5 g/mol

molar mass NaHCO3 = 84 g/mol

mol HCl :

= 40 : 58.5

= 0.684

mol NaHCO# :

= 40 : 84

= 0.476

There are 5.5 moles of Argon gas in tank

Given

122.6 liters of Argon gas

Required

The number of moles

Solution

Assume at STP

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

So for 122.6 L :

= 122.6 L : 22.4 L

= 5.47 moles ≈ 5.5 moles

Answer:

Q = 2627.25 J

Explanation:

Given that,

The mass of water, m = 28.7 g

The temperature of the water to increase from 11.3 °C to 33.2 °C

The specific heat of water is 4.18 J/gºC

The heat absorbed by the water is given by :

[tex]Q=mc\Delta T\\\\Q=28.7 \times 4.18 \times (33.2-11.3)\\\\Q=2627.25\ J[/tex]

So, 2627.25 J of heat is absorbed by the water.

the 3rd one is the answer

Answer:

0

Explanation:

Answer:

Producing disease-resistant crops

Explanation:

B. is the Right Answer Hope this helps!

Among all the given options, the correct option is option B.  Producing new medicines from bacteria is the most benefits for North Carolina agriculture.

The human genome's sequencing has sparked a biotechnology revolution that will have an impact on every area of our lives, including our environment, diet, and methods of sickness detection and treatment.

Already, biotechnology has raised the standard of living for us. The scope as well as volume of biotechnology's effects will increase in the coming decade as the rate of technological advancements increases.

The use of molecular biology innovations for applications in animal and human health, agriculture, the environment, and speciality biochemical manufacture is the widest definition of biotechnology.  Producing new medicines from bacteria is the most benefits for North Carolina agriculture.

Therefore, the correct option is option B.

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Answer:

D

Explanation:

Salinity is the saltiness or amount of salt dissolved in a body of water

Answer:

its b trust me i got it right

Explanation:

Answer:

false

Explanation:

Answer:

colder

Explanation: