3water within a piston–cylinder assembly, initially at 10 lbf/in.2 , 500°f, undergoes an internally reversible process to 80 lbf/in.2 , 800°f, during which the temperature varies linearly with specific entropy. for the water, determine the work and heat transfer, each in btu/lb. neglect kinetic and potential energy effects.

109.779BTU/lbm and 220.179BTU/lbm

Explanation:

We have the values of Pressure and Temperature,

At the tables, this conditions are for enthalpy and specific energy,

We calculate now the heat transfer for the system,

We can calculate now the work transfer given by,

33: i think it’s b

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.