A uniform copper bar 100 cm long is insulated on side, and has its ends exposed to ice and steam respectively. If there is a layer of water 0.1 mm thick at each end, calculate the temperature gradient in the bar. `K_(Cu)=1.04` and `K_(water)=0.0014` in CGS units.

Explanation

To solve the problem, we will calculate the temperature gradient in the copper bar by considering the thermal resistances of the water layers and the copper bar itself.

### Step-by-Step Solution:

1. **Identify the Given Data:**
- Length of the copper bar, \( L = 100 \, \text{cm} \)
- Thickness of water layer at each end, \( d = 0.1 \, \text{mm} = 0.01 \, \text{cm} \)
- Temperature at one end (steam), \( T_1 = 100 \, \text{°C} \)
...