Answer:
The energy dissipated from the blow dryer = 690000 J or 690 kJ
Explanation:
Electrical Energy: Is defined as the product of electric power and time.
The S.I unit of electrical energy is Joules (J)
Mathematically it is expressed as,
E = P×t................................... Equation 1
Where E = Electrical Energy, P = Electrical power, t = time.
Given: P = 2300 W, t = 5 min = 5×60 = 300 s.
Substituting into equation 1
E = 2300×300
E = 690000 J
E = 690000 J or 690 kJ.
Thus the energy dissipated from the blow dryer = 690000 J or 690 kJ
