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- A chocolate chip cookie contains about 200 kcal. how long could you power a 100-W light bulb with the energy from the cookie?How long does it take a 60 W lightbulb to use 4000 Joules of Energy?Every day a certain household uses a 3,3 kW electric stove for 72 minutes, six 6 hours each and miscellaneous appliances amounting to 1,6 kW h. The 3 kW hot w ninutes during the day. If electricity costs 35 c a kWh
- Academic Departments ETC - CIMS e-Services A stationery shop use the following electric appliances: (i) Three Air Conditioner of rating 1600 W for ten hours each day (ii) Two Electric water heater of rating 1000W each for 6 hours each day (lii) Twelve electric tube lights of rating 20W each for 12 hours each day. Calculate the electricity bill of the stationery shop for the month of November 2020 if the cost per unit of electric energy is 15 Bz/ kWh. on ) Electrical Energy(in kWh) consumed by three Air conditioners of rating 1600 W for 10 h of each day= 1) Electrical Energy(in kWh) consumed by two Electric Heaters of rating 1000 W for 6 h of each day= (1) Electrical Energy(in kWh) consumed by twelve Tube light of rating 20 W for 12 h of each day = (iv) Total energy(in kWh) consumed in the month November'2020 = (V) Electricity bill(in riyals) for the month of November'2020 = Next page - Problems for Practide DC. circuits O Type here to search Jump to Upload your Homework 2 Answerx Homework No.2 (page 2 of 2) Tn x U moodle.nct.edu.om/mod/quiz/atter e-Services - Academic Departments ETC - CIMS - A stationery shop use the following electric appliances: (i) Four Air Conditioner of rating 2100 W for twelve hours each day (ii) Two Electric Freezer of rating 2000W each for 24 hours each day (iii) Ten electric tube lights of rating 20W each for 12 hours each day. Calculate the electricity bill of the stationery shop for the month of November 2020 if the cost per unit of electric energy is 10 Bz/ kWh. (i) Electrical Energy(in kWh) consumed by four Air conditioners of rating 2100 W for 12 h of each day=D (ii) Electrical Energy(in kWh) consumed by two Electric Freezers of rating 2000 W for 24 h of each day= (iii) Electrical Energy(in kWh) consumed by ten Tube lights of rating 20 W for 12 h of each day = (iv) Total energy(in kWh) consumed in the month November'2020 = (v) Electricity bill(in riyals) for the month of November'2020 =Consider a building whose annual air-conditioning load is estimated to be 40,000 kWh in an area where the unit cost of electricity is $0.10/kWh. Two air conditioners are considered for the building. Air conditioner A has a seasonal average COP of 2.3 and costs $5500 to purchase and install. Air conditioner B has a seasonal average COP of 3.6 and costs $7000 to purchase and install. All else being equal, determine which air conditioner is a better buy.
- With a 1200 W toaster, how much does it cost to make a slice of toast (cooking time = 1.5 minute)? Electricity costs 8 cents per kW.h. centsProblem 5: Suppose you have have a 1100 W toaster. Part (a) How much electrical energy in J is needed to make a slice of toast (cooking time = 1 minute)? Part (b) At 11.5 cents/kWh, how many cents does this cost?You and your housemate have an argument over the cost of the electric bill. You want to turn off the outside porch light before going to bed each night. Your housemate wishes to keep the light on from 6:00 PM each evening to 6:00 AM the next morning and says that this will not add any significant amount to the electric bill. If the porch light bulb is a 40 W bulb, how much will your housemate's plan contribute to the electric bill each month? Take the number of days in a month as 30 and the average cost of electricity is 13.5¢/kW · h.$
- A 1100 W toaster takes one minute to toast a slice of bread. At 9.0 cents/(kW-h), how much does the toast cost? cost: cents Question Credit: OpenStax College PhysicsProblem 25.68 18 of I Peview Con Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity. According to one study of these bulbs, a compact bulb that produces as much light as a 100 W incandescent bulb uses only 23.0 W of power. The compact bulb lasts 10000 hours, on the average, and costs $12.00, whereas the incandescent bulb costs only $0.74, but lasts just 750 hours. The study assumed that electricity cost $0.090 per kilowatt-hour and that the bulbs were on for 4.0h per day Part A What is the total cost (including the price of the bulbs) to run incandescent bulbs for 3.0 years? Express your answer in dollars, nνα ΑΣφ ? 2$ Submit Request Answer Part B What is the total cost (including the price of the bulbs) to run compact fluorescent bulbs for 3.0 years? Express your answer in dollars. ν ΑΣφ Submit Request Answer Part C How much do you save over 3.0…A standard flashlight battery can deliver about 4.9 W.h of energy before it runs down. (a) If a battery costs 80 cents, what is the cost in dollars of operating a 100 W lamp for 8.8 h using batteries? (b) What is the cost in dollars if power is provided at the rate of 6.0 cents per kilowatt-hour? (a) Number (b) Number Mi i Units Units