Suppose a miracle car has a 100% efficient engine and burns fuel that has a 40-megajoules-per-liter energy content. If the air drag and overall frictional forces on this car traveling at highway speeds total 1000 N, what is the overall limit in distance per liter it could be driven on the highway

The car can travel at a limit of 40 km/liter on the highway.

Explanation:

We can solve this by equating the energy per liter of fuel to the product of distance and force of resistance. This means the following:

Energy = Force * Distance

(40000000 Joules) = (1000 N) * Distance

To travel the maximum amount of distance, our car needs to maintain a constant speed, where the only energy needed is to push back against air resistance and friction.

Solving the above equation, we get:

Distance = 40000000 / 1000

Distance = 40000 meters

Distance = 40 km

Thus, the car can travel 40 km/liter on the highway.

d) the number of neutrons plus the number of protons

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.