Question

?

Answer 1

so first one is non accelerating frames of reference of inertial frames

Answer 2

yeah ("non-accelerating frames of reference") should be sufficient

Answer 3

for c. if you recall the train moving at the speed of light, the clock slows down and appears narrower which indicates that, in general, time slows down and length decreases

Answer 4

for b "accelerated frames of reference"?

Answer 5

*accelerating

but yes

Answer 6

any ideas for open/closed/flat?

Answer 7

switch flat and closed

Answer 8

What about this

Answer 9

uh

well cosmic background radiation indicates that the universe is expanding i believe

still working on the others

Answer 10

nucleosynthesis: this has to do with the synthesis of light elements hydrogen, helium, lithium so I believe C is the better choice for the first blank

Answer 11

Is this right?

Answer 12

yeah (i'm not sure how detailed they want it but that's a good start at least)

the matching one I think it's CAB? the only one i'm not sure is the cosmic radiation one