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solong [7]
3 years ago
5

Which car is experiencing negative acceleration?

Physics
2 answers:
svp [43]3 years ago
7 0

Answer: b

Explanation: b as it slows down and <u>decelerates</u>

IgorLugansk [536]3 years ago
4 0

Answer:B

Explanation:

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Ideal gases are often studied at standard ambient temperature and pressure (satp). The international union of pure and applied c
11Alexandr11 [23.1K]

This problem provides information about the pressure and temperature ideal gases are studied at. The answer to the questions are that all molecules have the same density, 2.43x10²⁵ mol/m³ and 2.43x10¹⁹ mol/cm³.

<h3>Idela gases</h3>

In science, we can start studying gases with the concept of ideal gas, as they do not collide one to another and are assumed to be perfect spheres with no relevant interactions.

In such a way, one can conclude that the <u>number density of all ideal gasses at SATP is the same</u>, as they are assumed to be perfect spheres with equal volumes per molecule.

Moreover, when calculating the number of molecules per cubic meter, one must use the ideal gas equation as:

PV=nRT\\\\\frac{N}{V}= \frac{P*N_A}{RT}

And plug in the numbers we are given:

\frac{N}{V}= \frac{100kPa*\frac{1000Pa}{1kPa}*6.022x10^{23}molec/mol}{8.314\frac{Pa*m^3}{mol*K}*298K}=2.43x10^{25}molec/m^3

Lastly, we can calculate the molecules per cubic centimeter by performing the following conversion:

2.43x10^{25}\frac{molec}{m^3}*(\frac{1m}{100cm} )^3\\ \\=2.43x10^{19}\frac{molec}{cm^3}

Learn more about ideal gases: brainly.com/question/26450101

5 0
3 years ago
What kind of line on a distance vs. time graph indicates that the object is accelerating?
suter [353]

Answer: a curved line

Explanation: a straight line indicates that the object is moving at a constant velocity because it has one slope, but a curved line on a distance-time graph indicates that the velocity is constantly changing because the slope is changing, which is acceleration. the line could be curved in any direction, as long as it shows a change in slope.

7 0
3 years ago
Help guys <br><br> Jehdjdbdbxzjjxxjixhwvwbsbsbs
Andrew [12]

Answer:

<em>12.5watts</em>

Explanation:

Power = Workdone/Time

Since workdone = Force * Distance

Power = Force *distance/Time

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Distance = 10m

Time = 2 minutes = 120seconds

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Substitute the given values into the formula;

Power = 150 * 10/120

Power = 1500/120

Power = 12.5Watts

Hence his power is 12.5watts

<em></em>

6 0
3 years ago
What is the definition for relative motion
xeze [42]
Relative motion is the calculation of the motion of an object with regard to some other moving object.
7 0
3 years ago
The name (blank) means "all land"
mina [271]
I would say the answer is Pangaea.  I got this answer but google searching "all land" means what...  and the 3rd or 4th one down it says Answers.com
But i worn you answers.com is a very slow sight...
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