Practice Test - MCQs test series for Term 2 Exams

calculate the coulomb force between two alpha particles separated by a distance of 3.2 * 10 -15 m in air?

Asked by alexig2020 | 19th Apr, 2015, 03:55: PM

Expert Answer:

$begin mathsize 14px style Take space fraction numerator 1 over denominator 4 πε subscript 0 end fraction equals 9 cross times 10 to the power of 9 Nm squared straight C to the power of negative 2 end exponent Charge space on space the space alpha space particle equals plus 2 space straight e space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space plus space 2 space cross times 1.6 cross times 10 to the power of negative 19 end exponent straight C straight r space equals space 3.2 cross times 10 to the power of negative 15 end exponent straight m Required space repulsive space coulomb space force space between space the space alpha space particles space is comma straight F equals fraction numerator 1 over denominator 4 πε subscript 0 end fraction cross times fraction numerator straight q subscript 1 cross times straight q subscript 2 over denominator straight r squared end fraction straight F equals fraction numerator 9 cross times 10 to the power of 9 cross times 2 cross times 1.6 cross times 10 to the power of negative 19 end exponent cross times 2 cross times 1.6 cross times 10 to the power of negative 19 end exponent over denominator 3.2 cross times 10 to the power of negative 15 end exponent cross times 3.2 cross times 10 to the power of negative 15 end exponent end fraction straight N straight F equals fraction numerator 9 cross times 10 to the power of 9 cross times 3.2 cross times 3.2 cross times 10 to the power of negative 38 end exponent over denominator 3.2 cross times 3.2 cross times 10 to the power of negative 30 end exponent end fraction straight N straight F equals 90 space straight N end style$

Answered by Faiza Lambe | 19th Apr, 2015, 07:11: PM

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