Write two properties common to all the electromagnetic radiations.

Explanation

To answer the question, "Write two properties common to all the electromagnetic radiations," we can follow these steps:

### Step-by-Step Solution:

1. **Definition of Electromagnetic Radiation**:
- Electromagnetic (EM) radiations are forms of energy produced by the movement of charged particles. This can include electrons moving in various mediums or in a vacuum.

2. **Common Properties of Electromagnetic Radiation**:
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