9. According to Fourier's theorem, which of the frequencies in Question 7 will you likely need to add to make up the complex wave of Figure 7-30?
a) 2.5, 5.0, 7.5, ...,Hz
b) 2.5, 7.5, 12.5, . . . , Hz
c) 5, 10, 15, . . . , Hz
d) 5, 15, 25, ...,Hz
e) 10, 20, 30,...,Hz

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !

measuring things 1 litre of water

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over