Saturday, April 30, 2022

Would a rail gun in space produce recoil on the ship it was fired from?

Would a rail gun in space produce recoil on the ship it was fired from?
How genetically related are you to your ancestors a thousand years ago?
How did we figure out that mantis shrimp can see polarized light?
What reaction products are formed when potassium bicarbonate is added to a magnesium citrate solution (in water)?

Posted: 30 Apr 2022 07:24 AM PDT

Was randomly thinking of space battles in sci fi and it occurred to me that traditional kinetic weapons like fire arms would to some extent be pushing the ship they are mounted on which got me wondering if a rail gun would have the same result.

submitted by /u/4threetwoone
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How genetically related are you to your ancestors a thousand years ago?

Posted: 30 Apr 2022 08:17 AM PDT

Edit for the title: from a thousand years ago

By that I mean if we found a genetic sample of one of my ancestors from a thousand years ago and compared it to mine using modern methods, could you be able to tell we are directly related, as in he is my grand grand grand -... father?

Also this may be a dumb question buy could I be more related to some ancestors than others, as in could some genes could drown out others?

submitted by /u/Lord_Jalapeno
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How did we figure out that mantis shrimp can see polarized light?

Posted: 30 Apr 2022 07:22 AM PDT

submitted by /u/carsdn
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What reaction products are formed when potassium bicarbonate is added to a magnesium citrate solution (in water)?

Posted: 30 Apr 2022 08:36 AM PDT

submitted by /u/Rhyo9
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