Physics 102 Midterm 03W - radioactive atomsof twotypes,A...

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Quetion 1 a) A sample contains radioactive atoms of two types, A and B. Initially there are 4 times as many A atoms as there are B atoms. Two hours later the number of atoms of A and B are equal. The halflife of A is 0'50 hours, what is the hatf-life of B? b) Gven two point "fr*gl.a Q and -Q separated by a distance of 40 crn. Give two points(other than infinity) where the potential is zero (assume the usual definition that potential zero atr = infinitY). " c) Determine the electric field at point P for the following charge disfibution. Express your aaswer in terms of k and Q plus report il in unit vector form. v -n
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Question 2a The figure shows a solid metal sphere, radius r = 5.00 cm, and a conducting metal shell with inside radius r =10 cm and outside radius r =15 cm. At a position r = 8.00 cm the electric field is 150,000 N/c radially inwards and at r=17.00 cm it is 15,000
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This note was uploaded on 04/18/2008 for the course PHYSICS 102 taught by Professor Axen during the Fall '02 term at The University of British Columbia.

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Physics 102 Midterm 03W - radioactive atomsof twotypes,A...

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