Qualification > Sciences

a physics MCQ question !!hurry

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Jerry_LA:
i attached the queation below.
i don no how to slove q39.plaese guys.
Thanks it may not spend u time.

nid404:
i can't download the doc...can u attach it again or tell me the year

Jerry_LA:
0625_s05_qp1 mcq
q39
Thanks

esso:
since its half life is 5 days ..... the mass will be halfed twice...

therefore, 400 becomes 200 in 5days...

den the 200 becomes 100 in the next 5 days...

soo the answer is is C

hope i helped,,,,

gd luck 2morrow..

nid404:
thanx for answering it esso :)

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