An astronaut is floating happily outside her spaceship, which is orbiting the earth at a distance above the earths surface equal to 1 earth radius. The astronauts weight is An astronaut is floating happily outside her spaceship, which is orbiting the earth at a distance above the earths surface equal to 1 earth radius.

The astronauts weight is:

a. one-fourth her normal weight on earth

b. equal to her normal weight on earth

c. half her normal weight on earth

d. zero

The astronaut's weight will be one-forth of her normal weight on earth.

Explanation:

From Newton's law of gravitation, we can write the acceleration due to gravity (g) on Earth's surface is given by

where 'G' is gravitational constant, '' is Earth's mass and 'R' is Earth's radius.

As shown in the figure, if the astronaut is at a height 'h' from earth's surface and if '' be the value of the acceleration due to gravity at that height, then

Taking the ratio of both the equations, and as given h = R.

So,

where 'm' is the mass of the astronaut.

So the weight of the astronaut will be one-forth her normal weight on earth.

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.

colorectal cancer may also develop from areas of abnormal cells in the lining of the colon or rectum. this area of abnormal cells is called dysplasia and is more commonly seen in people with certain inflammatory diseases of the bowel such as crohn's disease or ulcerative colitis.