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How many joule of electrical energy is converted into hat and light 50 w lamp is lit for 2 hours ? |
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Answer» POWER = 50w t = 2 hrs = 2 * 3600s = 7200s ENERGY = ? energy = power * TIME = 50 * 7200 = 360000 joules = 3.6 * 10^5 J |
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