A few days ago
Ap physics problem (relativity)?
Assume 8.3 g of a substance marketed as “pure energy” is annihilated by 8.3 g of a second substance “Anti-Pure Energy”
How long would the energy released power a city which uses 2.3X10^9 W of power? answer in units of h.
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A few days ago
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Convert the combined grams to kilograms, then use E = mc^2.
If c is in meters per second (i.e., 300,000,000 meters per second), the energy will be in Joules, which are watt-seconds. Divide by the power of the city, in watts, to get seconds then divide by 3,600 seconds/hour to get hours.
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