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seraphim [82]
3 years ago
9

I need help! Which statements best describe the motion of car A and car B?

Chemistry
2 answers:
pychu [463]3 years ago
5 0

Answer : The correct options are :

2) car A and car B are moving in opposite direction.

3) car A is moving faster than the car B.

Explanation :

From the given position-time graph, we conclude that the car A shows positive slope and the car B shows negative slope. That means the object which has positive slope will move faster as compared to the object with negative slope.

In case of Car A, it is moving towards the positive direction of the position axis whereas Car B is moving towards the negative direction of the position axis which means that both cars are moving in opposite direction.

So, the car A is moving faster than the car B and both cars are moving in opposite direction.

zhannawk [14.2K]3 years ago
3 0

The correct answer is

Car A and car B are moving in opposite directions.

Car A is moving faster than car B.

Car A started ahead of car B.

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10. When the pressure on a gas inetcases three times, by how much will the volume incrcase or decrease?
blagie [28]

Answer:The answer to this question comes from experiments done by the scientist Robert Boyle in an effort to improve air pumps. In the 1600's, Boyle measured the volumes of gases at different pressures. Boyle found that when the pressure of gas at a constant temperature is increased, the volume of the gas decreases. when the pressure of gas is decreased, the volume increases. this relationship between pressure and volume is called Boyle's law.

Explanation: So, at constant temperature, the answer to your answer is: the volume decreases in the same ratio as the ratio of pressure increases.

BUT, in general, there is not a single answer to your question. It depend by the context.

For example, if you put the gas in a rigid steel tank (volume is constant), you can heat the gas, so provoking a pressure increase. But you won't get any change in volume.

Or, if you heat the gas in a partially elastic vessel (as a tire or a soccer ball) you will get both an increase of volume AND an increase of pressure.

FINALLY if you inflate a bubblegum ball, the volume will be increased without any change in pressure and temperature, because you have increased the NUMBER of molecules in the balloon.

There are many other ways to change volume and pressure of a gas that are different from the Boyle experiment.

4 0
3 years ago
Could someone help me with this too? Much appreciated! I am a bit stuck.
Mashcka [7]

Answer:

CO

Explanation:

4 0
3 years ago
Indigestion can be cured by antacid
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3 0
3 years ago
Read 2 more answers
What is the frequency of radiation whose wavelength is 2.25 X 10^-5cm?
Semenov [28]

Answer:

1.25 x 10^15Hz

Explanation:

c = frequency x wavelength

c is the speed of light, which is equal to 3.00 x 10^8 m / s

frequency = c /wavelength

= (3.00 x 10^8m /s) / (2.40 x 10^-5 cm x 1 m /100cm)

= (3.00 x 10^8 m/s) / 2.40 x 10^-7m

= 1.25 x 10^15/s 1 / s = 1Hz

So, the Frequency = 1.25 x 10^15Hz

I hope this helped :)

3 0
3 years ago
What is propsed as evidence that supports the Big Bang Theory?
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The answer to your question is Hubble’s law
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