Because of their gravitational pull. Thats how earth has a moon it pulled it into it's gravitational pull. That's why it does a circular rotation around the earth.
Th correct answer to this question would be, Insulator. Notice in the question it says "Material". The question is basically asking, What item resists the flow of and electric current. A resistor is a device that suppose to strain the electric current. And resistance is the measure of how well the material can conduct an electric charge. With all of that being stated, Insulator materials include paper, dry wood, rubber, glass, ect. Insulator products provides resistance.
Make sure you read the questions very carefully.
Assuming the temperature is kept constant during this change, you can use Boyle's Law to answer the question. The law relates the products of volume (V) and pressure (P) before and after:
Given V1, P1, and V2:
So, the pressure after the volume change, while the temperature is constant, will be 0.69 atmospheres. This is intuitive: the volume has increased with same amount of ideal gas, and so the pressure went down.
We have that the Tension is mathematically given as
T = 670 Newtons
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Tension </h3>
We have that when Tension in this context is use it looks towards Tension as a physical Quality that is defined as
T - m*g = m*a
the equation for the Tension is mathematically given as
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