/u/figurativelypam's posts in /r/askscience

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Study on Navy Special Operations candidates founds the "PEAS" scale was predictive of graduating the training. Where can I find the PEAS scale and has any other research corroborated or invalidated the study?

115 upvotes

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If Astatine and Francium have half-lives measured in minutes/hours, how on Earth are they naturally occurring?

3 upvotes

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Is there is maximum theoretical Delta-V than a spacecraft can have?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Study on Navy Special Operations candidates founds the "PEAS" scale was predictive of graduating the training. Where can I find the PEAS scale and has any other research corroborated or invalidated the study?	115
If Astatine and Francium have half-lives measured in minutes/hours, how on Earth are they naturally occurring?	3
Is there is maximum theoretical Delta-V than a spacecraft can have?	1