Post a New Question


posted by on .

A microwave oven has a power requirement of 1248 W. A frozen dinner requires 6.9 min to heat on full power.
(a) How much electrical energy (in kWh) is used?

(b) If the cost of electricity is 12 cents per kWh, how much does it cost to heat the dinner?

  • science - ,

    look at the units

    electrical energy (in kWh) = power (in kW) x time (in hour)

    cost of electricity = [electrical energy (in kWh)]*(12 cents/ kWh)

  • science - ,


Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question