suppose 200 J of work is done on a system and 80.0 cal is extracted from the system as heat . In the sence of the first law of thermodynamics what are the values ( including algbraic signs ) of (a) W ,(b ) Q m and (c ) `Delta E_(i n t) `?

Explanation

To solve the problem using the first law of thermodynamics, we need to identify the values of work (W), heat (Q), and the change in internal energy (ΔE_internal).

### Step-by-Step Solution:

1. **Identify Work Done on the System (W)**:
- The problem states that 200 J of work is done on the system. In thermodynamics, work done on the system is considered negative.
- Therefore, \( W = -200 \, \text{J} \).

...