Physics Middle School

Review the image of the nitrogen cycle. Nitrogen is an important element needed for plant growth. What living organism plays a big role in adding atmospheric nitrogen to the soil?
A) Fungi
B) Animals
C) Plants, such as legumes
D) Bacteria

Review The Image Of The Nitrogen Cycle. Nitrogen Is An Important Element Needed For Plant Growth. What

Answers

Answer 1
i think it is bacteria

Answer 2

Nitrogen is an important element needed for plant growth. Bacteria plays a big role in adding atmospheric nitrogen to the soil.

What is nitrogen cycle?

The nitrogen cycle is the biogeochemical process through which nitrogen is changed into a variety of chemical forms as it moves across ecosystems in the atmosphere, on land, and in the sea. It is possible to convert nitrogen using both biological and physical methods.

Fixation, ammonification, nitrification, and denitrification are significant nitrogen cycle processes. The greatest source of nitrogen, atmospheric nitrogen makes about 78% of the atmosphere on Earth. However, the biological use of atmospheric nitrogen is constrained, making it scarce in many different kinds of ecosystems.

Because the availability of nitrogen can influence how quickly important ecological processes like primary production and decomposition occur, ecologists are particularly interested in the nitrogen cycle.

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Related Questions

if the same amount of energy is added to 5 g of water and to 50 g of water, which sample will have the higher temperature

Answers

5 g .. Hope it helps
The 5g of water because there isn't much stuff in it so it wont take long for all of it to get hot

A neutral atom of helium has 2 protons and ______ electrons. (Enter a whole number.)

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2 electrons. electrons are negative, protons are positive. if it is electrically neutral, there must b the same Amt of them so they can cancel out

wich theory focuses on how people are different than animals

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Humanism is the answer

Answer:

Humanism.

Explanation:

Humanism is the ethnic and philosophical stance which focus on the values of human beings. It is the defined as the critical thinking and acceptance over the superstition and it is done by individual or group of people.

It is defined as looking the world on the basis of science rather go with the supernaturals.

Therefore, the theory of Humanism focus how people are different than animals.


The value of acceleration due to gravity (g) on Pluto is about 0.61 meters/second2. How much will an object that weighs 250 newtons on Earth weigh on Pluto? Note that the value of acceleration due to gravity on Earth is 9.8 meters/second2?

A.3.5 newtons

B.15.6 newtons

C.18.2 newtons

D.59.78 newtons

Answers

the answer is option B.because the object weight on earth is 250 N. we know that W=mg.......1) so put values, to find mass of body divide the totall weight of object on gravitational acceleration which is 9.8.so we get 25 kg mass. now put the value of mass and the gravitaional acceleration on pluto on equation 1 we get.
W=(25)(0.61)
W=156.6 newton..
if like my answer so please put this on brainlist answers.thanks

Answer:

The answer to this question is B: 15.6 newtons

Explanation:

1ST ANSWER THAT IS CORRECT GETS BRAINLIEST!!!!
Which term describes the process of water moving from plant leaves to the atmosphere?

Air pressure
Humidity
Transpiration
Density

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I don't think it's any of the normal/common choices so my answer would be Transpiration. Hope it helps.

What speed is a car going if it takes 2 hours to go 80 miles?

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Okay. If a car takes 2 hours to go 80 miles, the car is going 40 miles an hour. All you have to do is 80/2 in order to get your answer, because you do distance divided by time to find the speed.
The car would be moving at 40 miles per hour.

In your own words, explain how Doppler radar works. Describe the properties of electromagnetic waves and interactions that make Doppler radar possible. (13 points)

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If you stand up in a big room and echo, your voice will echo from the walls. As long as the room is empty. Since the speed of sound is constant, depending on air density, the more humid the air the faster and farther sound travels. The speed of sound is constant, you could measure the time it takes for your voice to echo off the walls. The same thing happens with Doppler radar, but it’s not voice, it has higher frequency signals.

Doppler Radar uses Doppler Effect as a principle to measure velocities, detect the presence of objects, identify meteorological phenomena and their intensity levels. This radar emits a continuous radio signal that allows the radar to differentiate between objects that are stationary and those in motion. This radar can be used, for example, to measure the speed of a particular object and to indicate its location, so that it is widely used in traffic surveillance.

Doppler radar is the most widely used type of weather radar that is currently of utmost importance for atmospheric monitoring. It is also employed for example in agriculture, air traffic and weather forecasting. Information gathered by radar assists meteorologists in early diagnosis of natural disasters.

Doppler effect, used by these radas, is a physical phenomenon observed in waves emitted or reflected by a source. It is perceived, for example, when listening to the sound of an ambulance passing by an observer. As the ambulance approaches, the tone becomes more and more acute, and as it moves away it becomes more serious. What happens is that we perceive a relative frequency, which is not the same frequency as the wave was emitted.

A current will not be induced because the wire is not part of a closed circuit.

Answers

An EMF will only be induced in a wire if it passes through a changing ... by air surrounding the wire

Question: For an 80-N squeeze on the handle of the pliers, determine the force F applied to the round rod b... For an 80-N squeeze on the handle of the pliers, determine the force F applied to the round rod by each jaw. In addition, calculate the force supported by the pin at A.

Answers

Force applied to round rod is 217 Newtons. Force applied to pin A is 297 Newtons. The pliers are basically a pair of simple levers. And like all levers, the product of length and force will remain a constant. So for the first part, we have the fulcrum at "A" The force applied is 80 N over a length of 95 mm giving us 80 * 95 = 7600. So the force applied to round rod will be X * 35 = 7600 And solving for X, gives us X * 35 = 7600 X = 217.1428571 N The answer to part 2 is almost as easy. But you need to rethink how the lever is. Instead of the fulcrum being at pin "A", we'll consider it to be at the round rod. So the lever arm that's getting the 80-N of force is now 35+95 = 130 mm long and the short level arm is still 35 mm. So 130 * 80 = 35 * X Solving for X 130 * 80 = 35 * X 10400 = 35 * X 297.1428571 = X So the pin is resisting 297 Newtons of force.

PLZ ANSWER ASAP!!!!!!!
A platinum bar measures 5.0 cm long, 4.0 cm wide, and 1.5 cm thick. It has a mass of 750.0 grams. Don't forget to find the volume of the bar (L X W X H). Use the formula D=m/v Calculate the density of the platinum bar (you need the volume first). Enter your answer in the space provided.

Answers

Final answer:

The density of the platinum bar is found by first calculating the volume (5.0 cm*4.0 cm*1.5 cm = 30.0 cm^3). Then, using the formula D=m/v, we divide the mass (750.0 grams) by the volume to find the density, which is 25.0 g/cm^3.

Explanation:

The density of a material is calculated by using the formula: D=m/v, where 'D' is the density, 'm' is the mass, and 'v' is the volume. In this case, we need to find the volume of the platinum bar first. The volume is determined by multiplying length, width, and height. Thus, you multiply 5.0 cm by 4.0 cm by 1.5 cm, which equals 30.0 cm^3.

Once you have the volume, you can determine the density of the platinum. The mass given is 750.0 grams. Therefore, density (D) is mass divided by volume. When you divide 750.0g by 30.0 cm^3, the calculated density becomes 25.0 g/cm^3.

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if something is being carried by westerlies, what direction is it moving??

Answers

Winds are immigrants. They're named for where they have already been and are coming from, not for where they're going.

A Westerly wind is coming from the West. Anything caught in it is being blown toward the east.

SOMEBODY PLEASE HELP!!! Indicate the reasons why the centripetal acceleration (and centripetal force) always point to the center in uniform circular motion. Select all that apply.
A.) The v points toward the center of the circle.
B.) The t points toward the center of the circle.
C.) F=ma and since "a" points toward the center, so does F.
D.) F=ma and since "m" points toward the center, so does F.

(V=velocity)(T=time)(A=acceleration)(F=force)(M=mass)

Answers

well we know the correct answer cannot be "a" bcause velocity is tangent to the circlular path of an object experienting centripical motion. Velocity DOES NOT point inward in centripical motion.

we know the correct answer cannot be "b" because "t" stands for "time" which cannot point in any direction. so, time cannot point toward the center of a circle and therefore this answer must be incorrect.

I would choose answer choice "c" because both force and centripical acceleration point toward the center of the circle.

I do not think answer choice "d" can be correct because the velocity of the mass moves tangent to the circle. velocity = (change in position) / time. Therefore, by definition the mass is moving in the direction of the velocity which does not point to the center of the circle.

does this make sense? any questions?

Answer:

The correct answer is a=(triangle)v/(triangle)t, and the (triangle) v points toward the center of the circle. AND C. F=ma, and since “a” points toward the center, so does F.

Explanation:

I just took this quiz.

You need to measure the length of your driveway. Which measuring tool would produce accurate results that you would expect to be the same as those found by others? A Your hand's span B A string cut to the length of the tip of your finger to the bottom of your palm C A meter stick with only centimeters D A ruler with millimeters and centimeters

Answers

The correct answer is D. 

the correct naswer is goig to be letter choice D

The unit of length that most nearly matches the width of your finger?

Answers

The unit of length is Centimeters

A 2.9 gram bullet is shot into a tree stump. It enters at a velocity of 304 m/sec and comes to rest after having penetrated the stump in a straight line. It takes 0.00043 sec to come to a stop after striking the stump. What was the force on the bullet during impact?

Answers

First convert grams to kilograms (so that the answer will be N) 1000g=1kg so 2.9g=.0029kg.

To solve for force we use the equation F=ma, so we need to find acceleration (a) .Next use the equation a=Δv/Δt. Δt is given as being .00043 seconds. Δv is the difference in velocities - final minus initial (this is important to discern the direction of the force vector); 0-304=-304. Now plugin and solve for a. The result is -706976.7442 m/s², or -710000 m/s² if you are using significant figures. 

Now use the values for mass and acceleration to solve for force. F=ma=-2050.232558N or F=- 2100N (if you are using significant figures).

what happens when velocity and acceleration are not in the same direction?

Answers

i think it becomes a negative integer?

Acceleration is the rate at which velocity changes, which means that acceleration tells you how fast the velocity is changing. A large acceleration tells you that the velocity is changing quickly - a small acceleration tells you that the velocity is changing slowly - an acceleration of zero tells you that the velocity is not changing at all.

Acceleration tells you how the velocity changes - it doesn't tell how how much the velocity is! An object can have a large velocity and a small (or zero) acceleration - and vice versa.

The element carbon has 3 naturally occurring isotopes. About 99% of carbon isotopes are C-12, about 1% are C-13, and a tiny amount are C-14. What is the average atomic mass of carbon atoms?
A) 11.01 amu

B. 12.01 amu

C. 13.01 amu

D. 14.01 amu

Answers

Average atomic mass of carbon is 12.01 amu

The wolves and moose of Isle Royale are the focus of the longest-running study of a predator-prey system in the wild. Both are recent arrivals to Isle Royale: moose swam to the island in the early 1900’s. Wolves followed decades later, traveling over the ice from Canada in the 1940’s.About 40 years into the study, the wolf population crashed when humans introduced the canine-parvovirus. Additional factors over the years have impacted both populations. At one point during the study, the moose population collapsed during the most severe winter on record followed by an outbreak of moose ticks. What point on the graph represents the outbreak of moose ticks and a drastic decline in the moose population?
A) Point A
B) Point B
C) Point C
D) Point D

Answers

Point C is the answer

Answer:

We have been given two cases of Wolves and moose of Isle Royale

We need to tell the outbreak of moose ticks and a drastic decline in the moose population.

We can see from the graph that A and B are representing Wolves

So, Option A and B are discarded.

Now, we should know the meaning of Outbreak in a graph which means  that the large number of people are represented by a single point.

Point C is representing large number of people at one point

So, Outbreak of Moose ticks is represented by Point C.

Now, the drastic decline is the point where the curve started to decrease

At point D the curve is decreasing

Hence, the drastic decline is at the point D.

1. The variable ______________ describes how quickly something moves. a) time c) speed b)position d) mass

Answers

Speed is the answer because it is the rate that something or someone is able to move.

You drop an object from a second floor window. Describe the speed of the object after 1 second

Answers

objects will accelerate more by 10 (m/s)2
If the object and the window are on Earth, then the object will be falling at 9.8 meters per second after one second.

Which ones are proudest chemicals?

Answers

aluminum oxide is the product

A (n)________ is a material that does not conduct heat well

Answers

insulator

Insulators are materials that hold in heat rather than transferring it or conducting.
An insulator is a material that does not conduct heat well.
Hope this helps

What two roles do forensic engineers play?

Answers

The 2 roles of forensic engineers is the detective role and then the engineering role.

Accident reconstructions and failure evaluations of vehicles and structures are the two roles that performed by forensic engineers.

What is forensic engineering?

When reconstructing crimes and accidents and figuring out their causes, forensic engineering makes use of ideas from mechanical, chemical, civil, and electrical engineering. Reconstruction of auto accidents is a significant part of that effort. Forensic engineers analyze information from skid marks, damage to cars and their locations after collisions, road and environmental conditions, injuries to drivers, passengers, and pedestrians, and witness testimony to assess what might have caused the accident.

Accident reconstructions and failure evaluations of vehicles and structures are performed by forensic engineers. In order to comprehend the physical dynamics of the 1995 Oklahoma City bombing and to provide an explanation for the fall of the World Trade Center's twin towers during the September 11 attacks in 2001, forensic engineering was crucial. Police investigations into auto accidents can benefit from forensic engineering.

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A neutral atom of aluminum has 13 protons and ______ electrons. (Enter a whole number.)

Answers

the answer is 13 electrons :)
A neutral atom of aluminum has 13 protons and 13 electrons.

Over the last several decades, scientists have addressed the problem of nonrenewable natural resources such as fossil fuels. Humans are using fossil fuels at a rapid rate and scientists believe that one day we will run out of them. To solve this problem, research has been conducted on alternative energy sources. One alternative energy source is nuclear energy. Although nuclear energy is a good solution to this problem, there are concerns.

Which of these is NOT a benefit of nuclear energy?


A) fossils fuels are not required
B) does not contribute to global warming
C) presence of hazardous radioactive materials
Eliminate
D) little carbon emissions released into the air

Answers

Answer:

Option (C)

Explanation:

The nuclear energy is defined as a type of energy which liberates either by the process of nuclear fusion or nuclear fission and is mainly used to generate electricity. This energy is stored in the core of an atom (or nucleus).

It is highly effective, cost-effective and there is no emission of greenhouse gases.

But it also has some disadvantages, of which one is that it produces radioactive waste materials, which are difficult to dispose these substances and is also a very expensive method. These materials emit radiations that are harmful to the organisms. So, it is very challenging to dispose these radioactive waste materials.

Thus, the correct answer is option (C).

Answer:

c.

Explanation:

presence of hazardous radioactive materials

All parts of the electromagnetic spectrum travel at a speed of 3 × 108 m/s when traveling through no medium. A "vacuum” means that there is no medium, such as a tube without any air in it. Therefore, 3 × 108 m/s is said to be the speed of light in a vacuum. If an electromagnetic wave’s frequency doubles in a vacuum, what are the other effects on the wave? Wavelength doubles and speed doubles. Wavelength doubles and speed stays the same. Wavelength divides in half and speed doubles. Wavelength divides in half and speed stays the same

Answers

Answer:

the answer is D.

Explanation:

Answer:D.  wavelength divides in half, and speed stays the same

Explanation: edge 2023

You push a coin across a table. The coin stops. How does this motion relate to balanced and unbalanced forces?

Answers

If you are pushing the coin across the table at a constant rate, the friction of the table and the horizontal force of your hand pushing are equal, and the coin itself moves at a constant rate. If you push a coin and let it go, there is no horizontal force keeping the coin going. Friction slows the coin to a stop. In both cases, the gravitational downward pull of Earth is equally but oppositely resisted by the upward push of table on the coin.

which of these is not a consequence of hydrogen bubbles covering the upper plate of a primary cell?
a: increase in the resistance of the cell
b: polarization
c: local action
d: generation of less current by the cell

Answers

B because B is showing that polarization would happen since hydrogen bubbles form that way.

The larger the push, the larger the change in velocity. This is an example of Newton's Second Law of Motion which states that the acceleration an object experiences is _____ .

Answers

The acceleration of an object, according to Newton's Second Law of Motion, is directly proportional to the magnitude of the net force, which is all the forces combined.
Hi,
From what I have learnt,
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
Hope this helps

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A 6000 kg train car traveling at 2.5 m/s collides with another 6000 kg train car now they are both moving but with a speed of 1.25m/s. this an exaple of?

Newton's secind law
Newton's third law
Newton's first law
The law of conservation of momentum

Answers

it would be the aw of conservation of momentum because the weight of momentum is getting converted
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