- I returned to Coventry this week.
- I may never see some people ever again.
- I am too sad to write in paragraphs.
Exercise 2.1:
i) How should one attempt to unpack the contents of a full (university) bedroom into another already full (home) bedroom?
ii) Upon returning home from University, how much money, (mainly in coppers), would be a surprising amount to find at the back of a bedroom cupboard that has remained undisturbed for a number of years?
iii) How many times does the earth rotate about its axis in 365 days?
iv) Boozy promised me that she'd write a blog last Saturday, four days have passed and she still hasn't, why not?
v) Why is it that every time I turn my computer on, the house Internet connection turns off, and every time that I turn my PC off, we regain Internet access... regardless of whether or not I have an Ethernet cable or wireless network card connected to my computer?
Solutions:
i) Don't bother, the problem is clearly impossible.
ii) £55.41
iii) approx. 366. Note that other sources e.g. Number Six, claim that the answer is 365. Note further, that these sources are wrong.
iv) Because she's a liar.
v) My best guess is radio interference with our router, but I've no idea what would cause this - any guesses would be welcomed.
6 comments:
i)correct
ii)correct (within error bars)
iii)almost right. Correct in the reference frame of the sun. Incorrect in that Number 6 is never wrong.
iv)correct.(although I would have also accepted lazy)
v)incorect. Ans: You're using a PC. Buy a mac.
well done, 3.5/5. Have a sticker.
Well argued Number 6. When Armstrong asked us the Earth question he did not specify his location and whether or not he was rotating himself. I'll also use this opportunity to say "Mac's are amazing". Enough said.
Hang on a minute before we all jump on the ill-defined question band-wagon...
Are you saying that it only makes sense for an object to rotate with respect to an observer?
To clarify my model of the earth rotating around the Sun is that of a ball following the path of a circle of fixed radius and origin at the centre of the sun... or is this model where the objections lie?
any question like this is meaningless without defining the coordinate system and the state of the observer wrt that system.
I argue in a similar way to number 6. It entirely depends on the point of reference. To a hard to define outside observer looking at the solar system about 366. To a person looking at the earthfrom the sun approx 365. For a person standing on the earths surface.... 0!
OK, I take your point that the person standing on the earth doesn't notice the earth rotate beneath him, (and thinks that the whole universe revolves around him/her/them, but this person is clearly selfish and therefore his view can be discounted.
However, the person standing on the sun, would have to be walking around the surface of the sun continuously facing the earth to believe that it has only rotated on its axis 365 times...
I don't see what's so "special" about relativity anyway... I don't care what Michelson and Morley said, there is an ether, and hence I'm right!
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