This is a two part question/answer. Amicrowave oven has a power requirement of 1

Question

This is a two part question/answer. Amicrowave oven has a power requirement of 1256 W. A frozendinner requires 5.2 min to heat on full power. a). How much electrical energy (in kWh) isused?------kWh b). If the cost of electricity is 12 cents per kWh, how muchdoes it cost to heat the dinner?------cent This is a two part question/answer. Amicrowave oven has a power requirement of 1256 W. A frozendinner requires 5.2 min to heat on full power. a). How much electrical energy (in kWh) isused?------kWh b). If the cost of electricity is 12 cents per kWh, how muchdoes it cost to heat the dinner?------cent

Explanation / Answer

Power P = 1256 W

Time t = 5.2 min = 5.2 / 60 = 0.086666 h

(a). energy E = Pt = 108.853 W h

                             = 0.108853 kW h

(b).cost C = 12 cents / kWh

Required cost = C * E

                       = 1.306 cents

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.