which equation correctly relates mechanical energy, thermal energy, and total energy when there is friction…

which equation correctly relates mechanical energy, thermal energy, and total energy when there is friction present in a system?\na. $e_{total}=me - e_{thermal}$\nb. $e_{total}=me\times e_{thermal}$\nc. $e_{total}=e_{thermal}-me$\nd. $e_{total}=me + e_{thermal}$

which equation correctly relates mechanical energy, thermal energy, and total energy when there is friction present in a system?\na. $e_{total}=me - e_{thermal}$\nb. $e_{total}=me\times e_{thermal}$\nc. $e_{total}=e_{thermal}-me$\nd. $e_{total}=me + e_{thermal}$

Answer

Explanation:

Step1: Recall energy - conservation principle

In a system with friction, mechanical energy is converted into thermal energy due to frictional forces. The total energy of the system is the sum of all forms of energy present.

Step2: Identify the correct relationship

The total energy $E_{total}$ of the system is the sum of mechanical energy (ME) and thermal energy ($E_{thermal}$). So, $E_{total}=ME + E_{thermal}$.

Answer:

D. $E_{total}=ME + E_{thermal}$