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BabaBlast [244]
3 years ago
8

Select the correct answer.

Physics
2 answers:
morpeh [17]3 years ago
7 0

Answer:

B

Explanation:

But molecules at a higher temperature have more energy.

Alekssandra [29.7K]3 years ago
7 0

Answer: B. Raising the temperature of the air

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Two blocks, with masses M2>M1, are connected by ropes. You pull to the right on a second rope, with external force "T1".The b
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Answer:

(M_1 + M_2) a > M_2 a

Becuase M_1 +M_2> M_2

So then we can conclude that:

T_1 > T_2

And that makes sense since the force T_1 needs to accelerate the two masses and T_2 just need to accelerate M_2.

So the best option for this case would be:

a. T1 > T2

See explanation below.

Explanation:

For this case we consider the system as shown on the figure attached.

Since the system is connected the acceleration for both masses are equal, that is a_{M_1}= a_{M_2} = a

From the second Law of Newthon we have that the force applied for the mass M_2 is F_{M_2}= M_2 a and we know that the force acting on the x axis for the mass 2 is F_{M_2}= T_2 so then we have that T_2= M_2 a

Now when we consider the system of M_1 +M_2 as a whole mass, this system have the same acceleration a and on this case we will see that the only force acting on the entire system would be T_1 and then by the second law of Newton we have that:

F_{M_1 +M_2} = T_1 = (M_1 +M_2) a

And then if we compare T_1 and T_2 we see that :

(M_1 + M_2) a > M_2 a

Becuase M_1 +M_2> M_2

So then we can conclude that:

T_1 > T_2

And that makes sense since the force T_1 needs to accelerate the two masses and T_2 just need to accelerate M_2.

So the best option for this case would be:

a. T1 > T2

6 0
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