Mắc bóng đèn nối tiếp với một điện trở R=12 ôm vào hiệu điện thế 18V. Một ampe kế đo cường độ dòng điện mạch chính -vẽ sơ đồ mạch điện
-tính điện trở tương đương của đoạn mạch
-tính số chỉ ampe kế
-đèn có sáng bình thường không ?vì sao

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.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.