What did you put (not what you think is right) for 5? (1 Viewer)

[juber]

What did everyone put for question 5??

I just want a rought idea of how many people were tricked by this question.....

 

[Adam]

Somebody set up us the bomb! D is the bitch!

 

[dnt stop runnin]

which one is supposed to be correct??...i put d and i stick by it

 

[Adam]

Check this thread: http://www.boredofstudies.org/community/showthread.php?s=&threadid=17452

There is a huge disscussion over it, and I'm not convinced that either one is more correct than the other, but I chose D.

 

[Bannanafish]

i chose d, B is correct

 

[Gruma]

D has to be correct, the clock was 10hours on the spacecraft. How many question are there about the people on the spacecraft being younger than the people on earth after they returned.

 

[Bannanafish]

yeah AFTER THEY RETURNED

 

[~TeLEpAtHeTiC~]

lol poll:
b = 0%
d = 100%

yeah i chose d aswell
but i can see why it is wrong and b can be the answer..but..i chose to still say its d.. cause that what i wrote
lol

 

[Bannanafish]

hahahah

well there's gotta be 1 hard mark to get in the whole exam

 

[Affinity]

It's B.... We'll see when the marking guidelines are released *grins*

 

[Bannanafish]

heheh affinity 1, rest of state 0

 

[juber]

Originally posted by Bannanafish
heheh affinity 1, rest of state 0

lol so true...

When they put out the standards packages those graphs are going to be looking fairly nice!

 

[Rahul]

it is B.
the clock relatively moving for an obsever will appear slow for that observer

 

[new1]

it is most probable if the students are split as we are, the teachers will be as well, so i think that they will make both B and D correct. This situation has occured before. There is definately some amount of ambiguity in the wording of the question.

 

[Affinity]

For those who still believe it is D, let me ask you another question:

A spaceship travels at a speed of 0.8c relative to the earth.
there are 2 identical clocks, one on the ship and and one on the earth. for the journey, the astronaut observed 6 hours to have elapsed on the clock on the earth. how much time would have elapsed when he looked at his own clock?



the question is clear:

consider the (simplified) lorentz transformation for time:

t' = t/(1-v^2/c^2)^(-1/2)

where t' is the time on the spaceship's frame and t is the time on earth and v is the relative speed between them

we're given that t' = 10, v=0.8C we have to find t.

10 = t/(0.6)
t = 6

 

[toknblackguy]

IT"S B!!!

 

[Belle]

I put D and I stick by that. I won't bother explaining the reason why it is D because it has already been attempted and several of the people who put B are too convinced of their own righteousness to listen to reason.

I guess we'll find out later

 

[Snapwizard]

Originally posted by Belle
I put D and I stick by that. I won't bother explaining the reason why it is D because it has already been attempted and several of the people who put B are too convinced of their own righteousness to listen to reason.

I guess we'll find out later

lol I put B aswell but now I think it might be B its all relative,who cares we'll find out soon enough!!

 

[Daemontreu]

I put B... After I worked it out (and got 6) I worked backwards as well... *shrug*

 

[dieselboi]

i put B!