A uniform metre has a mass of 90g and it's center of mass is the 50cm mark .this ruler suspended by a thread at the 70cm mark ,l balanced by a mass of weight W hanging from the 80cm mark . calculate the weight of the ruler , calculate the moment of the ruler about the 70cm mark , what is the moment of the weight W about 70cm mark

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.

an obstruction

no sign of dia of fuel cell