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HNQ
HNQ
4:19 AM
2
Q: Is it safe to keep uranium ore in my house?

GelloI bought 5.6 gr of uranium ore. The measured gamma radiation is 1µSv, we didn't have the instruments to measure alpha/beta radiation.

radiation estimation radioactivity biology laboratory-safety
 
 
4 hours later…
HNQ
HNQ
8:31 AM
2
Q: Meeting point of magnets

PedroSuppose, we leave two magnets in space close to each other. One is stronger than the other but, they have the same mass. Would they meet at the middle or closer to the stronger?

newtonian-mechanics electromagnetism magnetic-fields momentum conservation-laws
 

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