Calculate te radus of an isolated sphere of density `3.0 g cm^(-3)` from the surface of which the escape velocity be `40 ms^(-1)`

Explanation

To calculate the radius of an isolated sphere with a given density and escape velocity, we can follow these steps:

### Step 1: Understand the formula for escape velocity
The escape velocity (Ve) from the surface of a sphere is given by the formula:
\[ V_e = \sqrt{\frac{2GM}{R}} \]
where:
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