Answer:
a) [tex]\Delta E_{tot} = 19.14\,W[/tex], b) [tex]\Delta E_{mean} = 6.38\,W[/tex]
Step-by-step explanation:
a) The combined energy output is the sum of each energy output from instruments:
[tex]\Delta E_{tot} = E_{1} + E_{2} + E_{3}[/tex]
[tex]\Delta E_{tot} = 12.3\,W + 0.44\,W + 6.4\,W[/tex]
[tex]\Delta E_{tot} = 19.14\,W[/tex]
b) The average energy output of the instruments is:
[tex]\Delta E_{mean} = \frac{E_{1}+E_{2}+E_{3}}{3}[/tex]
[tex]\Delta E_{mean} = \frac{19.14\,W}{3}[/tex]
[tex]\Delta E_{mean} = 6.38\,W[/tex]
