Alaser of wavelength 633 (nm) illuminates two slits separated by 0.4 (mm). a screen is located 2 (m) from the slits. what is the distance on the screen from the central maxima to the 2nd order bright line? a) 0.4 (mm) b) 0.8 (mm) c) 3.15 (mm) d) 6.3 (mm)

The distance on the screen from the central maxima to the second order bright line is 6.33 mm

Explanation:

It is given that,

Wavelength of lase light,

Separation between slits, d = 0.4 mm = 0.0004 m

Distance between screen and slits, D = 2 m

We need to find the distance on the screen from the central maxima to the 2nd Order bright line. It can be calculated using :

n = 2

Y = 0.00633 m

or

Y = 6.33 mm

So, the distance on the screen from the central maxima to the second order bright line is 6.33 mm. Hence, this is the required solution.

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.

we need to know the time interval during which the force acts. impulse of force = momentum change