Electrons are ejected when sodium metal is irradiated with 400 nm light. what is the velocity of the electrons? (φna = 4.4 x 10-19 j)

The velocity of the sodium electrons is  m/s

Given the following data:

To find the velocity of the sodium electrons, we would use the equation of photoelectric effect:

Mathematically, the photoelectric effect is given  by the formula:

Where:

First of all, we would determine the photon frequency of the light.

Photon frequency =  Hertz

Now, we can determine the kinetic energy from eqn 1:

K.E = Joules.

Also, the kinetic energy possessed by an electron is given by the formula:

Velocity = m/s

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sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.