Optics (refraction) problem. a ray of sunlight traveling through the atmosphere enters a completely filled, wide, rectangular pond having vertical sides. the light arrives at the eastern edge of the pond at an angle of θ 75 degrees from a normal (perpendicular) drawn to the pond's surface, and continues until it strikes the bottom. assuming the pond contains water, and the depth of the pond is 12m, how far from the eastern edge of the pond will the light strike the bottom of the pond? 5. optics (lens) problem. a lens forms an image of an object. the object is 16.0cm from the lens. the image is 12cm from the lens on the same side as the object. a. what is the focal length of the lens? is the lens converging or diverging? b. if the object is 8.5mm tall, how tall is the image? is it erect or inverted? c. draw a principal ray diagram

0.3x0.21x0.08kg=mass 1 sheet

mass 500 = 500xmass 1

volume pile = 0.3x0.2x0.048

density=mass/volume= 500xmass 1/0.3x0.2x0.048

v patient student

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.