In a closed insulated container, a liquid is stirred with a paddle to increase the temperature. Which of the following is true?A. `Delta U = W != 0, q = 0`B. `Delta U = W != 0 = q != 0`C. `Delta U = 0,W = 0, q != 0`D. `U = Delta U = q != 0`

In a closed insulated container, a liquid is stirred with a paddle to

1.	In a closed insulated container, a liquid is stirred with a paddle to increase the temperature. Which of the following is true?A. `Delta U = W != 0, q = 0`B. `Delta U = W != 0 = q != 0`C. `Delta U = 0,W = 0, q != 0`D. `U = Delta U = q != 0`
Answer» Correct Answer - A In a closed insulated container, no heat can enter or leave the system, thus, `q = 0`. Due increase of temperature, `Delta U != 0`. According to the first law of the thermodynamics, `Delta U = q + W` `= 0 + W` `W != 0`

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In a closed insulated container, a liquid is stirred with a paddle to increase the temperature. Which of the following is true?A. `Delta U = W != 0, q = 0`B. `Delta U = W != 0 = q != 0`C. `Delta U = 0,W = 0, q != 0`D. `U = Delta U = q != 0`

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