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OpenStudy (anonymous):
An electron and proton move towards each other with velocities v1 and v2 resp. The velocity of their center of mass is?
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OpenStudy (anonymous):
@experimentX
OpenStudy (anonymous):
options are zero v1 v2 (v1+v2)/2
OpenStudy (experimentx):
must be around v2 ... mp >>> me
OpenStudy (anonymous):
actually this is supposed to be a very simple question since this came on my school exam
OpenStudy (experimentx):
it is v2
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OpenStudy (anonymous):
how?
OpenStudy (experimentx):
|dw:1343812191614:dw|
OpenStudy (anonymous):
velocity of centre of mass=m1v1+m2v2 /m1+m2..
OpenStudy (anonymous):
yeah i think you are right @experimentX
OpenStudy (experimentx):
well ... that's would make |dw:1343812288231:dw|
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