ACTIVITY: ENERGY CONSERVATION Use the chart below to determine the costs for different types of light...
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ACTIVITY: ENERGY CONSERVATION Use the chart below to determine the costs for different types of light bulbs. Answer the questions that follow. LED CFL Incandescent Light bulb projected lifespan 50,000 hours 10,000 hours 1,200 hours Watts per bulb (equiv. 60 watts) 10 14 60 Cost per bulb $5.00 $2.25 $1.05 KWh of electricity used over 500 700 3000 50,000 hours 5 42 $11.25 $44.10 Bulbs needed for 50k hours of use 1 Equivalent 50k hours bulb expense $5.00 Source:eartheasy.com/live_led_bulbs_comparison.html Labor cost - $24/hr. 4 bulbs replaced per hour 1. What is the cost of operating incandescent bulbs for 50,000 hours, if the cost of electricity is $0.10 per KWh? 2. What would it cost to replace 100 incandescent bulbs with compact fluorescent bulbs? bulbs. 3. What would it cost to replace 100 incandescent bulbs with LED bulbs? At a cost of $0.10 per KWh, how long would it take to break even? 4. Which bulb is the best choice from an energy conservation perspective? igste ACTIVITY: ENERGY CONSERVATION Use the chart below to determine the costs for different types of light bulbs. Answer the questions that follow. LED CFL Incandescent Light bulb projected lifespan 50,000 hours 10,000 hours 1,200 hours Watts per bulb (equiv. 60 watts) 10 14 60 Cost per bulb $5.00 $2.25 $1.05 KWh of electricity used over 500 700 3000 50,000 hours 5 42 $11.25 $44.10 Bulbs needed for 50k hours of use 1 Equivalent 50k hours bulb expense $5.00 Source:eartheasy.com/live_led_bulbs_comparison.html Labor cost - $24/hr. 4 bulbs replaced per hour 1. What is the cost of operating incandescent bulbs for 50,000 hours, if the cost of electricity is $0.10 per KWh? 2. What would it cost to replace 100 incandescent bulbs with compact fluorescent bulbs? bulbs. 3. What would it cost to replace 100 incandescent bulbs with LED bulbs? At a cost of $0.10 per KWh, how long would it take to break even? 4. Which bulb is the best choice from an energy conservation perspective? igste
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