How much energy per year do they use for lighting

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Reference no: EM13332980

There are 50x10^6 homes in the US. Each home has one light bulb which runs one hour per day. all have 75watt light bulbs.

a) How much energy per year do they use for lighting?

b) What would this answer be for 18watt bulbs?

c) How much energy was saved?

d) How many barrels of oil does this energy saving represent?

Reference no: EM13332980

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