In a certain city, electricity costs $0.15 per kw·h. what is the annual cost for electricity to power a lamp-post for 6.00 hours per day with (a) a 100.-watt incandescent light bulb (b) an energy efficient 25-watt fluorescent bulb that produces the same amount of light? assume 1 year = 365 days.

(a) Power of bulb is 100 W, converting this into kW.

Thus,

The bulb is used for 6 hours per day for a year, in 1 year there are 365 days thus, total hours will be:

Electricity used will depend on power and number of hours as follows:

The cost of electricity is $0.15 per kW.h thus, cost of electricity for 219 kW.h will be:

Therefore, annual cost of incandescent light bulb is

(b) Power of bulb is 25 W, converting this into kW.

Thus,

The bulb is used for 6 hours per day for a year, in 1 year there are 365 days thus, total hours will be:

Electricity used will depend on power and number of hours as follows:

The cost of electricity is $0.15 per kW.h thus, cost of electricity for 54.75 kW.h will be:

Therefore, annual cost of fluorescent bulb is .

passed in september 1935, these laws are known as nuremberg laws.   they forbid jews from marrying but not directly forced them to divorce aryans. what is most noticeable is the fact that the jews were defranchised, meaning by this that they were not expected to have any civil rights, including the right to vote. the right answer is deprived of the right to vote.

distance, luminosity, brightness, radius, chemical composition, and temperature