An aeroplane if flying horizontally for west to east with a velocity of 900 km/hours. Calcuate the potential difference developed between the ends of its wings having a span of 20n. The horizontal component of the Earth's magnetic field is `5 xx 10^(-4) T` and the angle of dip is `30^(@)`.

Explanation

To solve the problem step by step, we will follow the given information and apply the relevant formulas.

### Step 1: Convert the velocity of the airplane from km/h to m/s
The velocity of the airplane is given as 900 km/h. To convert this to meters per second (m/s), we use the conversion factor:

\[ \text{Velocity in m/s} = \text{Velocity in km/h} \times \frac{5}{18} \]
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