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Two balloons, one with a charge of 4.0 × 10-6 coulombs and the other with a charge of 8.2 × 10-6 coulombs, are kept 2.0 meters apart. What is the electric force between the two balloons? (k = 9.0 × 109newton·meter2/coulombs2)

asked Jan 24, 2019

Chemistry
high-school

2 answers

2 votes

37.9k views

Radioactive isotope #1 has been kept for 1.5 years. Originally, there were 100 grams and now there are 99.39 grams. When will there be 1 gram left?

asked Jul 24, 2018

Mathematics
high-school

1 answer

0 votes

228k views

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