`100` millicuries of radon which emits `5.5 MeV alpha`- particles are contained in a glass capillary tube `5 cm` long with internal and external diameters `2` and `6 m m` respectively Neglecting and effects and assuming that the inside of the uniformly irrandicated by the particles which are stopped at the surface calculate the temperature difference between the walls of aa tube when steady thermal conditions have been reached. Thermal conductivity of glass `= 0.025 Cal cm^(-2) s^(-1)C^(-1)`
Curie `= 3.7 xx 10^(10)` disintergration per second
`J = 4.18` joule `Cal^(-1)`s

Explanation

To solve the problem, we will follow these steps:

### Step 1: Calculate the decay rate of radon in disintegrations per second
Given that we have `100 millicuries` of radon, we can convert this to disintegrations per second using the conversion factor:
1 Curie = \(3.7 \times 10^{10}\) disintegrations/second.

\[
\text{Decay rate} = 100 \text{ mCi} = 100 \times 10^{-3} \text{ Ci} = 0.1 \text{ Ci}
...