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xz_007 [3.2K]
3 years ago
11

Which diagram is the best representation of gas molecules in a closed container? A. Diagram A B. Diagram B C. Diagram C D. Diagr

am D

Physics
1 answer:
Alinara [238K]3 years ago
4 0
A. Diagram A because gasses can "float" and spread out, all the others are pretty close together. Answer A would be the smartest decision. 
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Which of the following quantities are vectors?
Arte-miy333 [17]

Answer:

electric fields

Explanation:

3 0
3 years ago
A person with a mass of 72 kg is riding a bicycle is accelerating at a rate of 5m/s on a horizontal surface. What is the weight
nikklg [1K]

Answer:

w = 706.32 [N]

Explanation:

The force due to gravitational acceleration can be calculated by means of the product of mass by gravitational acceleration.

w = m*g

where:

w = weight [N] (units of Newtons)

m = mass = 72 [kg]

g = gravity acceleration = 9.81 [m/s²]

Then we have:

w = 72*9.81\\w = 706.32 [N]

7 0
3 years ago
A particle moves along a straight line with an acceleration of a = 5>(3s 1>3 + s 5>2) m>s2, where s is in meters. De
Len [333]

Answer:

v=1.295

Explanation:

What we are given:

a=5÷(3s^(1/3)+s^(5/2)) m/s^2

Start by using equation  a ds = v dv

This problem requires a numeric method of solving. Therefore, you can integrate v ds normally, but you must use a different method for a ds The problem should look like this:

\int\limits^a_b {x} \, dx

<em>a=2</em>

<em>b=1</em>

<em>x=5÷(3s^(1/3)+s^(5/2)) </em><em>m/s^2</em>

<em>dx=dv</em>

Integrate the left side the standard method.

\int\limits^a_b {x} \, dx

<em>a=v</em>

<em>b=0</em>

<em>dx=dv</em>

<em>Integrating</em>

=v^2/2

Use Simpson's rule for the right site.

\int\limits^a_b {x} \, dx

<em>a=b</em>

<em>b=a</em>

<em>x=f(x)</em>

f(x)=b-a/6*(f(a)+4f(a+b/2)+f(b)

If properly applied. you should now have the following equation:

v^2/2=5[(1/6*(0.25+4(0.162)+(0.106)]

        =0.8376

Solve for v.  

      v=1.295

5 0
2 years ago
Explain why the stars look different between Jane and John
Svetlanka [38]
To summarize, Jane's star has a red light and is traveling towards the earth while John's star star has a blue light and is traveling away from the earth. ... The stars look different because they are traveling in different directions.
8 0
3 years ago
If a machine has 100% efficiency, it means that
jarptica [38.1K]
Well, a device that is 100% efficient, would need to accomplish these things: first: it would need no energy to work second: it wouldn't produce any waste third: it would lose no energy while working fourth: it would work forever fifth: it wouldn't need another force (a human, by example) to operate it. according to this, the only thing i think can be called 100% efficient is a natural magnet. it doesn't consume energy (it even produces it) it doesn't produce any waste, and so on. there you go, i'd say a magnet is perfect to use!
6 0
3 years ago
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