In a certain city, electricity costs $0.14 per kW - h. What is the annual cost for electricity to power a lamppost for 8.00 h per day with a 100. W incandescent light bulb versus an energy efficient 25 W fluorescent bulb that produces the same amount of light? Assume 1 year = 365 days. 100. W bulb: $ 25 W bulb: S Is the additional cost of the fluorescent bulb justified? /year A typical incandescent bulb costs $0.89 and lasts for about a year; a typical energy efficient fluorescent bulb costs about $3.49 and lasts for about 3 years. O yes O no /year

In a certain city, electricity costs $0.14 per kW - h. What is the annual cost for electricity to power a lamppost for 8.00 h per day with a 100. W incandescent light bulb versus an energy efficient 25 W fluorescent bulb that produces the same amount of light? Assume 1 year = 365 days. 100. W bulb: $ 25 W bulb: S Is the additional cost of the fluorescent bulb justified? /year A typical incandescent bulb costs $0.89 and lasts for about a year; a typical energy efficient fluorescent bulb costs about $3.49 and lasts for about 3 years. O yes O no /year

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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In a certain city, electricity costs $0.12 per kW · h. What is the annual cost for electricity to power a lamppost for 7.50 h per day with a 100. W incandescent light bulb versus an energy efficient 25 W fluorescent bulb that produces the same amount of light? Assume 1 year = 365 days. 100. W bulb: $ lyear 25 W bulb: $ lyear A typical incandescent bulb costs $0.89 and lasts for about a year; a typical energy efficient fluorescent bulb costs about $3.49 and lasts for about 3 years. Is the additional cost of the fluorescent bulb justified?
A 60-W incandescent light bull costs $0.41. An equivalent 18-W compact fluorescent (CFL) bulb costs $1.10, and an equivalent 9-W light emitting diode (LED) bulb costs $2.00. If the electric company charges $0.1075 per kWh, how many hours would you need to run the CFL and LED light bulb to save money?
The 20-W LED bulb can provide the same amount of light output as the 100-W incandescent light bulb. How much percentage you could save for using the LED bulb in place of the incandescent bulb for one year, assuming ₱7.50 per kilowatt-hour is the average energy rate charged by the power company? Assume that the bulb is turned on for 7 hours a day. a.) 20% b.) 80% c.) 150% d.) none of the above
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
A homeowner replaces a typical incandescent bulb that draws 100W with an energy-efficient fluorescent bulb that produces the same amount of light but draws only 18W. The bulb was in an outdoor fixture that is on every night for 10 hours.a. How much energy per year does the new bulb save?b. How much money per year does the new bulb save if PG&E charges P 7.50/kWh?c. What if the owner replaced 10 of the same bulbs, how much would he save?
An iPhone battery stores 6.55 Wh of energy. How many iPhones could be charged in one day by a small solar panel of dimensions 0.54 m X 0.35 m. Assume that this panel has an efficiency of 18% and is in Gainesville where we get 5.47 kWh/m2/lday. Roundoff the number to zero decimals. 54 36
An 11.0-W energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-W incandescent lightbulb. Assuming a cost of $0.116/kWh for energy from the electric company, how much money does the user of the energy-efficient bulb save during 200 h of use? (Give your answer to the nearest cent.)
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 65 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 12.9¢/kW · h. $
A 9 W led lightbulb emits the same light as a 60 W standard lightbulb. If a power company charges 10 cents per kW.h, then how much money do you save by using the led lightbulb instead of the standard lightbulb for 30 days?
Problem 6: Suppose the cost of an incandescent bulb is 23 cents and that electricity costs 12 cents/kWh. Compact fluorescent lightbulbs (CFL), while they are more expensive, use 1/10 of the power for the same amount of illumination. What would be the maximum cost (in dollars) of a CFL such that the total cost (investment plus operating) would be the same for both CFL and incandescent 60 W bulbs? Assume both lightbulbs run for 1000 h.
4%E1 . lu. A moodle.nct.edu.om/mod/qui A stationery shop use the following electric appliances: (i) Three Air Conditioner of rating 2000 W for ten hours each day (ii) Two Electric water heater of rating 2250W each for 6 hours each day (iii) 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 20 Bz/ kWh. (i) Electrical Energy(in kWh) consumed by three Air conditioners of rating 2000 W for 10 h of each day= (ii) Electrical Energy(in kWh) consumed by two Electric Heaters of rating 2250 W for 6 h of each day= العربية الإنجليزية G
0. An electric power station is producing 1.40 x 10 W of power that is to be sen o* town located 60.0 km away. Each of the two wires that comprise the trannion e resistance per kilometer of length of 400 x 10 Olpe/km. Find the power lont in beatin the wires if the voltage is stepped up from 2200 V to 20000 V using an ideal tranlorr. a) 1.21 x 10 Watts b) 2.32 x 10 Watts c) 1.12 x 10 Watts d) 5.59 x 10 Watts e) 1.16 x 10 Watts nhilo L4.00 yu which have their tratis