Ex. 1915. An Arduino analog input voltage is 3.400 volts. Arduino PWM output pin drives a low-pass filter, as shown in Figure 1915. The low-pass filter converts the PWM signal back to an average-DC voltage. Arduino specifications include: I/O voltage range of 0 to 5VDC; 10-bit A/D input; and an 8-bit D/A PWM output. input DC voltage results in an analog output DC volage at the low-pass The analog filter. Determine (Vout - Vin). Arduino functions include: analogRead(), map(), and analogWrite(). map() and analogWrite() require integer arquments ans: 1

Please send the answer by typing only. I don't want handwritten.  The subject is about Renewable Energy ( Fossil Fuels) 3.     How the Fossil Fuels are contributing to global warming?

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1-What phrase is used when a substitution is permitted for a specific item? 2-The specifications state that all work shall be done... 3-What phrase is used when a substitution is permitted for a specific item? 4-What is the purpose of an electrical symbol? 5. Where are notations found?