Part A and B please Electronic flash units for cameras contain a capacitor for storing the energy used to produce the flash. In one such unit, the flash lasts for a time interval of 1.48×10−3 s with an average light power output of 2.70×105 W. Part A If the conversion of electrical energy to light has an efficiency of 92.0 %(the rest of the energy goes to thermal energy), how much energy must be stored in the capacitor for one flash? Part B The capacitor has a potential difference between its plates of 140V when the stored energy equals the value calculated in part A. What is the capacitance?
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Part A and B please
Electronic flash units for cameras contain a capacitor for storing the energy used to produce the flash. In one such unit, the flash lasts for a time interval of 1.48×10−3 s with an average light power output of 2.70×105 W.
Part A
If the conversion of electrical energy to light has an efficiency of 92.0 %
(the rest of the energy goes to thermal energy), how much energy must be stored in the capacitor for one flash?
Part B
The capacitor has a potential difference between its plates of 140V when the stored energy equals the value calculated in part A. What is the capacitance?
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