questions need help (1 Viewer)

[martin310015]

1. high speed muons produced for an experiment by the fermilab accelerator are measured to have a lifetime of 0.5 microseconds. when these muons are brought to rest, their lifetime is measured to be 2.2 microseconds.

a) Name the effect demostrated by these observations of the lifetimes of the muons.

i said something like time dilaiton....

b) calculate the velocity of the muons as they leave the accelerator.

i got 0.898c



thanx.....

 

[Heinz]

Yeah, its time dilation but for part b, i got 0.974c. Maybe someone else can verify the answer. Oh and where did you get this question from? It seems very familiar.

 

[martin310015]

i got it from the 2001 hsc paper

 

[martin310015]

and thanx

 

[Heinz]

damn it, thats there my physics teacher got this question from. It was almost identical to the one in my half yearly (let that be a lesson, do as many past papers as possible).

 

[Xayma]

Why do they have a longer life span when at rest?

 

[martin310015]

have no idea

 

[xiao1985]

Originally posted by Scuderia
I think the question should be 5.0 microseconds instead of 0.5 microseconds. No doubt its a typo that's all.

yea, that's wut i was thinkin... =p

 

[CaR]

ooou..
there's another question similar to that in the jacaranda textbook..isnt there?...i think..''

 

[Constip8edSkunk]

its a standard HSC relativity question actually. You are bound to meet a question related 2 muons during ur HSC yr

yeah it has to be a typo earlier