Answer
Around 400 B.C.E, the Greek philosopher Democritus introduced the idea of the atom as the basic building block matter. Democritus though that atoms are tiny, uncuttable, solid particles that are surrounded by empty space and constantly moving at random.
Pls give me BRAINLIEST
E = mass x gravity x height
"<span>The current is the same at all points" is the one among the following choices given in the question that answers the question correctly. The correct option among all the options that are given in the question is the fifth option or the last option. I hope that this is the answer that has come to your desired help.</span>
Answer:
The system loses 90 kJ of heat
Explanation:
We can answer the question by using the 1st law of thermodynamics, which states that:
![\Delta U=Q-W](https://tex.z-dn.net/?f=%5CDelta%20U%3DQ-W)
where
is the change in internal energy of the system
is the heat absorbed by the system (positive if absorbed, negative if released by the system)
is the work done by the system (positive if done by the system, negative if done by the surrounding on the system)
In this problem, we have:
is the work done (negative, because it is done by the surrounding on the system)
is the increase in internal energy
Using the equation above, we can find Q, the heat absorbed/released by the system:
![Q=\Delta U+W=+60 kJ+(-150 kJ)=-90 kJ](https://tex.z-dn.net/?f=Q%3D%5CDelta%20U%2BW%3D%2B60%20kJ%2B%28-150%20kJ%29%3D-90%20kJ)
And the negative sign means that the system has lost this heat.