Physic

posted by .

Fan -- 15W
Heating elements -- 1.2kW
Mains -- 240
A) calculate the weekly cost of having the fan heater with the warm air setting on for 3hours each day. Assume that the cost of electricity is 0.25 cents per kWh.

  • PhysicS -

    Physics, sorry and thanks !

  • Physic -

    cost= power*time*chargeperwatt.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    why does an heater with a fan is more efficient than a similar heater that doesn't have a fan?
  2. physics

    A fan drawing electricity at a rate of 1.5kw is located within rigid enclosure of 3m*4m*5m. Enclosure is filled with air at 27oC, 0.1 MPa. The fan operates for 30 minutes. Assume the ideal gas model, determine a) mass (in kg) b) final …
  3. College Physics

    On average, an electric water heater operates for 3.4h each day. If the cost of electricity is $0.3 kWh, what is the cost of operating the heater during a 30-day month?
  4. Physics

    A lamp (R = 151 ), an electric heater (R = 24 ), and a fan (R = 49 ) are connected in parallel across a 121 V line. What total current is supplied to the circuit?
  5. physics

    A ceiling fan has four blades, each with a mass of 0.40 kg and a length of 65 cm. Model each blade as a rod connected to the fan axle at one end. When the fan is turned on, it takes 4.45 s for the fan to reach its final angular speed …
  6. physics

    a family goes on vacation for a week and leaves on a fan that consumes electricity at the rate of 200 watts. If the electricity is $0.14/kWh, how much does it cost to run the fan during this time?
  7. Physics-Electricity

    A toaster consists of 4 heating elements that are connected in parallel. The toaster is connected to a 240 V mains supply. When the toaster is switched on, a current of 2.5 A is drawn from the mains supply. Calculate the electrical …
  8. Physics - Fields

    A fan causes a velocity field that falls off inversely with the distance from the fan. For one fan, the air speed at 1.3 m is 6.3 m/s. If two of these fans are placed 3 m apart, pointed at each other, what will be the air speed 1 m …
  9. Physics

    On a windless day, a sailor (m=75kg) decides he wants to go sailing (=300kg). In order to move on this windless day, he decides to mount a powerful battery operated fan )m=(20 kg) on the back of his sailboat and points the running …
  10. PHYSICS

    On a windless day, a sailor (m = 75 kg) decides he wants to go sailing in his sailboat (m = 300 kg). In order to move on this windless day, he decides to mount a powerful battery-operated fan (m = 20 kg) on the back of his sailboat …

More Similar Questions