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zvonat [6]
3 years ago
9

ASAP Will give brainlist . As a scientists have learned more about atoms , models of atoms have changed. One of the first atomic

was a solid ball , such as a marble .
What are two limitations of using a marble to model an atom?
A - The model is not made of commonly available materials or objects.
B - The model does not move or behave like a real atom.
C - The model does not show the true size of an atom.
D - The model is much harder to see than a real atom.
Physics
1 answer:
Anestetic [448]3 years ago
7 0

Answer:

B - The model does not move or behave like a real atom.

Explanation:

The solid ball does not show how the nucleus is composed of protons and neutrons, or the relationship between the electrons and the nucleus.

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What changes dead plants and animals into ammonia compounds?
lapo4ka [179]

Nitrogen fixing bacteria changes dead plants and animals into ammonia compounds.

<h2>What is nitrogen fixation?</h2>

Atmospheric nitrogen is converted into nitrogen oxides by the action of lightning, which helps its incorporation into the soil.

<h3>Characteristics of Nitrogen fixing bacteria</h3>

  • Nitrogen is fixed by these bacteria and other prokaryotes through various metabolic processes, which convert it into different usable compounds, such as ammonia (NH3) and ammonium ion (NH4+).

  • These microorganisms can be found in soil and water, or as plant symbionts.

Therefore, we can conclude that nitrogen fixing bacteria fix nitrogen from the air, that is, they originate soluble compounds by plants, such as ammonia.

Learn more about nitrogen fixation here: brainly.com/question/14726009

7 0
2 years ago
The change in pitch of a train's horn as it passes while you are standing still can be explained by:________
Mazyrski [523]
D.the Doppler effect
3 0
3 years ago
Body of a 218 kg starta from rest and attains the velocity of 63 m/s in 9 second
Vanyuwa [196]

Answer:

567m

Explanation:

By using formula of velocity.

7 0
3 years ago
Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up
kirza4 [7]

Answer:

I believe the answer is b

Explanation:

5 0
3 years ago
A 2 kg ball is dropped above the surface of Planet X. If the gravitational field strength at the surface of Planet X is 5 N/kg,
Trava [24]

Given data:

* The mass of the ball is 2 kg.

* The gravitational field strength at the surface of planet X is 5 N/kg.

Solution:

The weight of the ball on the planet X is,

W=ma

where m is the mass of ball, a is the gravitational field strength,

Substituting the known values,

\begin{gathered} W=2\times5 \\ W=10\text{ N} \end{gathered}

Thus, the weight of the ball on the surface of planet X is 10 N.

3 0
1 year ago
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