PGroot

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Member Since October 16, 2009 , From United States

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Recent Activity by PGroot

Commented: About Anonymous's answer

The side of the square is 2 cos 45 degrees (1.4142) times the half-diagonal which is 15, which is 21.213.

Posted 1 month ago

Commented: About Anonymous's answer

The correct answer is a square that has a diagonal of 30" fits inside a 30" circle, and its side is 30 x .7071 = 21.213".

Posted 1 month ago

Commented: About Anonymous's answer

http://www.cancer.gov/cancertopics/factsheet/detection/PSA Paragraph 5 under false positives gives the 25% figure. http://www.webmd.com/prostate-cancer/guide/psa This one says that a PSA level of 4 ...

Posted 1 month ago

Commented: About Anonymous's answer

Actually, only about 25% of patients with elevated PSA will have cancer found by biopsy.

Posted 1 month ago

Commented: About Ol' Yeddar's answer

Here Comes The Sun - Beatles http://www.youtube.com/watch?v=Bj1AesMfIf8

Posted 1 month ago

Commented: About Ol' Yeddar's answer

Typically they only allow +-x/ operators, but factorial is good for me.

Posted 1 month ago

Commented: About Rocmike Junior's answer

I'm not Dfrogpong, whom you call Tadpole. You are wrong again.

Posted 1 month ago

Commented: About Ol' Yeddar's answer

A clear case of a salt, but not battery.

Posted 1 month ago

Commented: About Fred Guenther's answer

The moon is 1/81 of the earth's mass, which makes it rather large as moons go. The earth-moon system is still considered a planet and satellite, rather than a double planet, because the common center ...

Posted 1 month ago

Commented: About PGroot's answer

Admittedly the circular orbit calculations are not applicable to all orbits. Although many of the planets and moons have nearly circular orbits, some are more eccentric ellipses, especially the long ...