Question

У процесі оброблення на точильному крузі деталь нагрівається. Як змінюється внутрішня енергія деталі? а) збільшується через теплопередачу; б) зменшується через теплопередачу; в) збільшується внаслідок виконання роботи; г) зменшується внаслідок виконання роботи​

Answer 1

Відповідь:

а

Пояснення:

Answer 2

Processing of a Workpiece on a Grinding Wheel

When a workpiece is processed on a grinding wheel, it heats up due to the friction and energy transfer involved in the process. Let's explore how the internal energy of the workpiece changes as a result.

Internal Energy Change of the Workpiece:

The internal energy of the workpiece changes as it heats up during the grinding process. This change can be attributed to several factors, including heat transfer and the performance of work.

a) Increases due to Heat Transfer:

The internal energy of the workpiece increases as a result of heat transfer during the grinding process. The friction between the workpiece and the grinding wheel generates heat, leading to an increase in the internal energy of the workpiece.

b) Decreases due to Heat Transfer:

The internal energy of the workpiece does not decrease due to heat transfer during the grinding process. Instead, it increases as mentioned earlier.

c) Increases due to the Performance of Work:

The internal energy of the workpiece also increases as a result of the work performed during the grinding process. The energy input into the workpiece during the grinding process contributes to an increase in its internal energy.

d) Decreases due to the Performance of Work:

The internal energy of the workpiece does not decrease due to the performance of work during the grinding process. Instead, it increases as a result of the energy input and heat generation.

In summary, during the processing of a workpiece on a grinding wheel, the internal energy of the workpiece increases primarily due to heat transfer and the performance of work.