The energy needed to keep a 75-watt lightbulb burning for 1.0h is 270kJ. Calculate the energy required to keep the lightbulb for 5.0h in each of the following energy units. joules Express your answer using two significant figures E= ? J kilocalories Express your answer using two significant figures E= ? kcal
The energy needed to keep a 75-watt lightbulb burning for 1.0h is 270kJ. Calculate the energy required to keep the lightbulb for 5.0h in each of the following energy units. joules Express your answer using two significant figures E= ? J kilocalories Express your answer using two significant figures E= ? kcal
Chapter7: Statistical Data Treatment And Evaluation
Section: Chapter Questions
Problem 7.10QAP
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The energy needed to keep a 75-watt lightbulb burning for 1.0h is 270kJ. Calculate the energy required to keep the lightbulb for 5.0h in each of the following energy units.
joules
Express your answer using two significant figures
E= ? J
kilocalories
Express your answer using two significant figures
E= ? kcal
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