An 11,000-watt radio station transmits at 880 khz. calculate the number of photons that are emitted per second.

1.88x10^31 photons hope this helps

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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well we can't tell you because we cant see the time give a screen shot or something.