Physics:
1. According to Einstein theory, all the matter has energy. The expression 0.5 (3 x 108)2 describes
the amount of resting energy in joules, contained in half a kilogram of potato. Simplify
expression
2. a) Now, consider that an hour of CFL use consumes 1.4 x 10-2 kWh (kilowatt per hour
kilowatt-hour)
If each kilowatt-hour of electric use is equivalent to 3.6 x 10 joules of energy, then find
the energy in joules used by the CFL in one hour.
b) If we could use the energy released by half a kilogram of potato, approximately how many
hours will we be able to light the CFL from that energy
MY REQUEST TO ALL
please help me in solving thiss
Answers
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Answer:
Physics:
1. According to Einstein theory, all the matter has energy. The expression 0.5 (3 x 108)2 describes
the amount of resting energy in joules, contained in half a kilogram of potato. Simplify
expression
2. a) Now, consider that an hour of CFL use consumes 1.4 x 10-2 kWh (kilowatt per hour
kilowatt-hour)
If each kilowatt-hour of electric use is equivalent to 3.6 x 10 joules of energy, then find
the energy in joules used by the CFL in one hour.
b) If we could use the energy released by half a kilogram of potato, approximately how many
hours will we be able to light the CFL from that energy
MY REQUEST TO ALL
please help me in solving thiss
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