In an electromagnetic wave, how are electric vector `(vecE)`, magnetic vector `(vecB)` and velocity of propagation of the wave `(vecc)` oriented ?
How long would gamma radiation take to travel from sun to earth, a distance of `1.5xx10^(11)m?`

Explanation

To solve the question, we will break it down into two parts:

1. The orientation of the electric vector (E), magnetic vector (B), and the velocity of propagation (c) in an electromagnetic wave.
2. The time taken for gamma radiation to travel from the Sun to the Earth.

### Part 1: Orientation of Vectors in an Electromagnetic Wave

1. **Understanding the Orientation**:
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