physics

posted by .

How much energy expressed in units of food Calories (that is, kilocalories) is required to operate a 100 W light bulb for 14.70 hours?

  • physics -

    100•14.7 W•h = 1.47 kW•h = 1263.97 kCal

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    You can buy an energy-saving light bulb for $18.07, which can work for 10,000 hours. It costs you 0.8 cents to operate it for an hour. ($1=100 cents). A regular light bulb with the same intensity costs 39 cents. The light bulb can …
  2. physics

    How many joules of energy are required to run a 100 W light bulb for one day?
  3. Physics

    A special kind of light bulb emits monochromatic light of wavelength 630 nm. Electrical energy supplied to it at the rate of 60W, and the bulb is 93% efficient at converting that energy into light energy. How many photons are emitted …
  4. Physics

    Anyone can help me with these questions: 1. BC Hydro charges $5.91 per kWh. How long does it take a 100 W light bulb to use up $1.00 of energy?
  5. physics

    An oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and heat energy. If the light bulb converts 75% of the electrical energy to …
  6. physics

    The Easy Bake Oven is a common toy for young children who want to emulate the process of cooking. Suppose this oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts …
  7. Physics- Help!!

    1. What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C?
  8. Physics

    What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C?
  9. Physics

    A 100 watts light bulb has an average life of 2000 hours. How much energy does it consume over its lifetime?
  10. Physics

    A 100 watts light bulb has an average life of 2000 hours. How much energy does it consume over its lifetime?

More Similar Questions