Which part(s) of a telephone involves the conversion of sound waves to electrical signals?

a.) both the speaker and the microphone

b.) the microphone

c.) neither the speaker nor the microphone

d.) the speaker

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Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water

In figure 1-2 what is the distance from point b to point c?