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Ksenya-84 [330]
3 years ago
12

Which arrow is the action and which arrow is the reaction?

Physics
1 answer:
inysia [295]3 years ago
8 0
Up is the reaction and down is the action
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What's is meant by relative motion?​
saveliy_v [14]

Relative motion means a motion relative to a reference point. We can also say, relative motion means motion referred or observed from a reference point.

For example, Alex is in a train and Ace is at the station, when the train starts moving, for Ace it is moving at a speed of 10 m/s, but for Alex it is moving at 0 m/s, or we can say that it is at rest for Alex, but in motion for Ace. This is relative motion.

4 0
3 years ago
Read 2 more answers
How many neutrons does element x have if it’s atomic number is 40 and it’s mass number is 82?
Black_prince [1.1K]
The atomic number gives you the number of protons element x has. Since the mass of protons and neutrons are almost similar(around 1 amu), the mass number can be thought of as the sum of protons and neutrons. so if element x whose atomic number is 40 has a mass number of 82, then we know that 42 of those must be neutrons.
4 0
3 years ago
Region that contains the majority of molecules in the atmosphere
Anna71 [15]

Answer:

Trophosphere

Explanation:

The troposphere is the atmospheric layer closest to the planet and is characterized because contains the largest percentage of the mass of the total atmosphere.

On special characteristic is that in this layer the temperature and water vapor content decrease a lot respect to the altitude. Also on this layer the Water vapor is important in order to regulate the air temperature since on this zone we have absorption of the solar energy.

The troposphere contains almost all the water vapor in the atmosphere. And specially on the tropics we have an accumulation of the water vapour.

All weather phenomena occur within the troposphere. Tropos means "change" and Troposphere means "region of mixing".

Above this layer, we have the tropopause, ranges in height from 5 miles near the poles up to 11 miles above the equator. And the height depends of the seasons, with an special characteristic: the is highest height occurs in the summer and lowest height occurs in the winter.

The troposphere contains almost 75% of the mass of the entire atmosphere. The air on this layer is composed by 78% nitrogen, 21% oxygen and 1% is made of argon, water vapor, and carbon dioxide.

So for this reason this is the Region that contains the majority of molecules in the atmosphere.

4 0
3 years ago
The primary purpose in creating national parks is to _____. protect the land from development and pollution provide locations fo
zzz [600]

Answer:

The primary purpose in creating national parks is to protect the land from development and pollution.

Explanation:

National parks are owned by the national government. This areas are strictly reserved for habitat of wild animals.

The main purpose for creating national parks is to reserve some space for nature. This area is protected from pollution and development.

Thus, answer for given question is protect the land from development and pollution.

4 0
3 years ago
2 kilogram bowling ball sits on top of a building that is 40 m the object has k e or g p e or both be sure to include the correc
Licemer1 [7]
GPE=mass*GFS*height
2kg*9.8N/Kg*40m -I've used the Grabitational field strength of the earth's
surface

=784J
7 0
3 years ago
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