The value of escape speed from certain planet is 4 km/s. What will be the orbital speed of a satellite orbiting close to its surface ?

Explanation

To find the orbital speed of a satellite orbiting close to the surface of a planet given that the escape speed from that planet is 4 km/s, we can use the relationships between escape speed and orbital speed.

### Step-by-Step Solution:

1. **Understanding Escape Speed and Orbital Speed**:
- The escape speed (\(v_e\)) from a planet is given by the formula:
\[
v_e = \sqrt{\frac{2GM}{R}}
...