I think that in super conductivity, the low temperature REDUCES lattice vibrations to a bare minimum, but doesn't mean there are -no- lattice vibrations.according to this, i got 10/15, which im relatively content with
maybe im over analysing this, but:
13. i said A because the presence of these cooper pairs necessitates a lack of lattice vibrations. so essentially, it is the lack of lattice vibrations which result in the cooper pairs, thus resulting in superconductivity
Yeah you're right. Plus, there are still lattice distortions due to the BCS theoryI think that in super conductivity, the low temperature REDUCES lattice vibrations to a bare minimum, but doesn't mean there are -no- lattice vibrations.
yeah that is so true. the answer really depended on whether the spaceship was relative to the planet or relative to the sun. i just went with relative to the sun and said both values changed.I am somewhat surprised no one has mentioned the ambiguity of the first question. I find it very ironic that the spend a chunk of the Space module teaching us how concepts of speed and velocity are relative and depend on ones frame of reference, then give us the first multiple choice question without telling us the frame of reference. Most people seem to have put the "obvious" answer from some external frame of reference, but from the frame of reference of the planet the speed of the swinging by mass actually remains the same.