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37. Give two examples of different fossil fuels currently used today? 38.Explain how voice is changed into...

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Physics

37. Give two examples of different fossil fuels currently usedtoday?

38.Explain how voice is changed into a fluctuating voltage inthe early telephones?

39. What 1799 discovery allowed us to translate the ancientEgyptian hieroglyphs?

40.In the scientific method or process an explanation aboutnatural phenomena with little or no experimental fact is called a________________.

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37 Coal and Petrol 38 A telephone uses an electric current to convey sound information from your home to that of a friend When the two of you are talking on the telephone the telephone company is sending a steady electric current through your telephones The two telephones yours and that of your friend are sharing this steady current But as you talk into your telephones microphone the current that your telephone    See Answer
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