Answer:
5 kW
Step-by-step explanation:
Add the individual energy requirements (all in kJ/s):
1.7 + 1.2 + 0.7 +0.8 + 0.7 = 5 kJ/s
The sum of the individual energy requirements is 5 kJ/s.
Since 1 kilowatt (kW) = 1 kJ/s, this can also be expressed as 5 kW