One face of a copper cube of edge 10 cm is maintained at `100^(@)C` and the opposite face is maintained at `0^(@)C`. All other surfaces are covered with an insulating material. Find the amount of heat flowing per second through the cube. Thermal conductivity of copper is `385Wm^(-1) C^(-1)`.

Explanation

To solve the problem of finding the amount of heat flowing per second through a copper cube, we can follow these steps:

### Step 1: Identify the given values
- Edge length of the cube, \( L = 10 \, \text{cm} = 0.1 \, \text{m} \)
- Temperature of one face, \( T_1 = 100^\circ C \)
- Temperature of the opposite face, \( T_2 = 0^\circ C \)
- Thermal conductivity of copper, \( K = 385 \, \text{W/m} \cdot \text{C} \)

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