aprilreneeclaroxob0c
07.06.2020 •
Physics
How much would it cost to operate five incandescent light bulbs for the months of April and May, collectively, given that each bulb is one hundred and fifty Watts, electricity for home use is 0.3AED per kilowatt-hour, and that the light s will be on for three hours per day during this two month period. please i need an answer fast or my teacher will kill me
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Ответ:
Total Cost is 41.18 AED
Explanation:
Per day number of hours light bulbs were on=3hours
5 bulbs power consumption = 150Wx5 = 750W
Electricity usage per day = 750 x 3 = 2250Wh = 2.25kWh
April has 30 days and May has 31 days. Therefore totals days = 61days
Total power consumption = 2.25x 61 = 137.25kWh
Total Cost = 137.25x 0.30 = 41.175 AED
Ответ:
2 kg is the mass
Explanation:
1/2 mv^2=64
64*2/64=m
so m is 2 kg