tiaemrich146
05.05.2020 •
Mathematics
A small home speaker produces 0.200 ~\text{W}0.200 W of acoustical power. (This is achieved, for example, by a 10-Watt speaker operating at 2% electrical efficiency). If the speaker projects sound uniformly in all directions, what is the loudness of the sound (in dB) at a distance of 0.668 ~\text{m}0.668 m from the speaker?
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Ответ:
i dont speak english
Step-by-step explanation:
Ответ:
okay so he gets $12 * x(the amount of albums he sells)
he gets a total of $200
he made a total of 644, subtract by 200 is 444, divided by 12 = 37. so he sold 37 albums last month.