IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: Jerry_LA on June 09, 2009, 12:16:23 pm

Title: a physics MCQ question !!hurry
Post by: Jerry_LA on June 09, 2009, 12:16:23 pm

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

Title: Re: a physics MCQ question !!hurry
Post by: nid404 on June 09, 2009, 12:19:30 pm

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

Title: Re: a physics MCQ question !!hurry
Post by: Jerry_LA on June 09, 2009, 12:26:56 pm

0625_s05_qp1 mcq
q39
Thanks

Title: Re: a physics MCQ question !!hurry
Post by: esso on June 09, 2009, 12:45:44 pm

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..

Title: Re: a physics MCQ question !!hurry
Post by: nid404 on June 09, 2009, 12:49:58 pm

thanx for answering it esso :)

Title: Re: a physics MCQ question !!hurry
Post by: esso on June 09, 2009, 12:53:14 pm

Quote from: nid404 on June 09, 2009, 12:49:58 pm

thanx for answering it esso :)

ur welcome....

Title: Re: a physics MCQ question !!hurry
Post by: Jerry_LA on June 09, 2009, 01:33:09 pm

Thanks mate .good luck 2  ;)