Aseries of measurements of a physical quantity gave us the following numbers (in some unit): 2. 17.47468 17.47392 17.47616 17.47499 17.47257 a. calculate the best estimate of the physical quantity (i. e. calculate the mean value of b. calculate, using the standard deviation method, the error on the considered c. write the error keeping only one significant figure. (it's may be safest to always d. write the final result (i. e. best estimate+ absolute error). the series of measurements) quantity. round up the error).

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.

v=ir = 3x15 =45 v

increase masses, decrease separation