4:chemical properties can only be observed when a substance changes into another substance.
5: physical properties such as color and shape are easy to observe
6: in a chemical change an altered substance forms
7: cooking or baking food will result in a chemical change
8: a melting ice cube is a physical change
9: the rusting of iron is a chemical change
10: water boiling is a scientific physical change
Answer:
A. Radio waves.
Explanation:
Electromagnetic radiation is defined as the waves (or photons - packets of energy) of the electromagnetic field, propagating through space, carrying electromagnetic radiant energy.
Examples of electromagnetic radiation are : infra red, visible light, ultraviolet light, gamma rays, radio waves etc.
If Voq doubles, abN gets multiplied by 16 .
If Voq=3, abN=81 .
Answer:
Sound waves does not include in EM Spectrum
So, option C is your answer!
Explanation:
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