On its high power setting, a microwave oven produces 900 W of 2560 MHz microwaves. (a) How

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On its high power setting, a microwave oven produces 900 W of 2560 MHz microwaves.

(a) How many photons per second is this? 

(b) How many photons are required to increase the temperature of a 0.500-kg mass of pasta by 45.0°C, assuming a specific heat of 0.900 kcal/kg · °C? Neglect all other heat transfer. 

(c) How long must the microwave operator wait for their pasta to be ready?

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