Old Man Posted May 25, 2022 Report Share Posted May 25, 2022 4 hours ago, Pariah said: There are very few things in nature, it seems, that do not spin. "Make it spin! Spinning is so much cooler than not spinning." It's worse than you think. No quarks or leptons have a quantum spin of zero, so in essence, all matter spins. Getting dizzy... gonna hurl... Quote Link to comment Share on other sites More sharing options...
Bazza Posted May 25, 2022 Report Share Posted May 25, 2022 *laughs at Old Man's post* Quote Link to comment Share on other sites More sharing options...
Old Man Posted May 25, 2022 Report Share Posted May 25, 2022 *vomits while spinning, the angular momentum carrying the vomit in an outward spiral, drenching anyone nearby which I guess includes Bazza* Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted May 25, 2022 Report Share Posted May 25, 2022 Virtual vomit? Almost poetic. Quote Link to comment Share on other sites More sharing options...
Pariah Posted May 25, 2022 Author Report Share Posted May 25, 2022 Memo to self: It's not your job to speculate on the mental, moral, or genetic shortcomings of the examinees. Just score the exams. It's much faster that way. Grailknight 1 Quote Link to comment Share on other sites More sharing options...
Cancer Posted May 26, 2022 Report Share Posted May 26, 2022 4 hours ago, L. Marcus said: Virtual vomit? Almost poetic. Wanna see him turn green? Ask him if the particles' rotations are subject to LS coupling or j-j coupling. I suggest being behind a plexiglass barrier when you ask, though. Quote Link to comment Share on other sites More sharing options...
Bazza Posted May 26, 2022 Report Share Posted May 26, 2022 5 hours ago, Old Man said: *vomits while spinning, the angular momentum carrying the vomit in an outward spiral, drenching anyone nearby which I guess includes Bazza* I laughed as you mixed science with natural philosophy. Quote Link to comment Share on other sites More sharing options...
Logan D. Hurricanes Posted May 26, 2022 Report Share Posted May 26, 2022 I can practically see the teacher cackling now... Spoiler Quote Link to comment Share on other sites More sharing options...
L. Marcus Posted May 26, 2022 Report Share Posted May 26, 2022 Hey now, Doc C. has more facial hair than that. Quote Link to comment Share on other sites More sharing options...
Ternaugh Posted May 26, 2022 Report Share Posted May 26, 2022 35 minutes ago, Logan.1179 said: I can practically see the teacher cackling now... Reveal hidden contents Are we assuming a spherical cow? Quote Link to comment Share on other sites More sharing options...
Cancer Posted May 26, 2022 Report Share Posted May 26, 2022 No, a toroidal polyhedral cow. Quote Link to comment Share on other sites More sharing options...
Cancer Posted May 26, 2022 Report Share Posted May 26, 2022 Oooo, another thing with a hole through it. Quote Link to comment Share on other sites More sharing options...
Pariah Posted May 27, 2022 Author Report Share Posted May 27, 2022 I gave final exams today. Because they were of the multiple choice variety, I already have them scored and grades entered. With everything that's happened in the last several days, I have basically no motivation to go in and put in a full day tomorrow. But I have even less motivation to do the lesson planning that would be necessary to call in a sub. I swear this is the only occupation where it's easier just to go to work when you feel like crap than to take a day off. Quote Link to comment Share on other sites More sharing options...
Bazza Posted May 27, 2022 Report Share Posted May 27, 2022 So movie? Quote Link to comment Share on other sites More sharing options...
Pariah Posted May 27, 2022 Author Report Share Posted May 27, 2022 Probably the final episode of the original Cosmos series, "Who Speaks for Earth?" Quote Link to comment Share on other sites More sharing options...
Bazza Posted May 27, 2022 Report Share Posted May 27, 2022 Ummm…Gaia? Quote Link to comment Share on other sites More sharing options...
Cancer Posted May 30, 2022 Report Share Posted May 30, 2022 Quote Estimate the size of impactor needed to boil away Earth's oceans. Initially, you will need to estimate the energy needed to do that. Assume the Earth's oceans cover 3/4 of its surface and are a uniform 3 km deep, and that they are at their maximum-density temperature for (pure) liquid water at standard pressure. With water's specific heat and latent head of vaporization, this lets you compute the energy. The only source of energy is the kinetic energy of the impactor. Two cases are worth exploring: an asteroidal planetesimal with a density of about 3 metric tons per cubic meter and an impact velocity of about 25 km/s; and a cometary impactor with a density of about 1 metric ton per cubic meter and an impact velocity of 60 km/s. Obviously not all the impactor's KE goes into boiling water, but the fraction is unlikely to be less than 5 to 10%, so assume an impactor mass ten times that needed to get ten times the "boil-away energy" computed in the first paragraph. Compute both the impactor mass and impactor radius of spherical objects in the two cases. L. Marcus and Pariah 1 1 Quote Link to comment Share on other sites More sharing options...
Logan D. Hurricanes Posted May 30, 2022 Report Share Posted May 30, 2022 Teachers caused this, I just know it. Quote Link to comment Share on other sites More sharing options...
Cancer Posted May 30, 2022 Report Share Posted May 30, 2022 If you wait in a plane, however, you can discuss all the math you want. Old Man 1 Quote Link to comment Share on other sites More sharing options...
Old Man Posted May 30, 2022 Report Share Posted May 30, 2022 Huh, I haven’t seen Bit-O-Honey in the wild in years. Quote Link to comment Share on other sites More sharing options...
Pariah Posted May 30, 2022 Author Report Share Posted May 30, 2022 1 hour ago, Cancer said: If you wait in a plane, however, you can discuss all the math you want. ...if you're so inclined. Quote Link to comment Share on other sites More sharing options...
Bazza Posted May 30, 2022 Report Share Posted May 30, 2022 Quote Link to comment Share on other sites More sharing options...
Logan D. Hurricanes Posted May 31, 2022 Report Share Posted May 31, 2022 Tricky question: a) and b) are not mutually exclusive. Quote Link to comment Share on other sites More sharing options...
Cancer Posted May 31, 2022 Report Share Posted May 31, 2022 In some jurisdictions, the correct answer is (e): use it as a way to get extended range when launching hamsters out of your ventral orifice with combustible gas and matches Quote Link to comment Share on other sites More sharing options...
Old Man Posted May 31, 2022 Report Share Posted May 31, 2022 f) shout through it like it's a megaphone g) pretend it's a telescope h) pretend it's a gun i) juggle it Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.