<Table> <Tr> <Td> <P> </P> <Dl> <Dd> L 1 2 l L 2 2 l ≈ 4 (L 2 L 1) 2 ⇒ (\ displaystyle (\ frac (\ frac (L_ (1)) (2l)) (\ frac (L_ (2)) (2l))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow \, \!) L 1 L 2 ≈ 4 (L 2 L 1) 2 ⇒ L 1 L 2 ≈ 4 3 (\ displaystyle (\ frac (L_ (1)) (L_ (2))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow (\ frac (L_ (1)) (L_ (2))) \ approx (\ sqrt ((3)) (4)) \, \!) </Dd> </Dl> </Td> <Td> <Table> <Tr> <Td> <P> </P> </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> </Tr> <Tr> <Td> <P> </P> </Td> </Tr> </Table> </Td> <Td> <P> (8) </P> </Td> </Tr> </Table> <Tr> <Td> <P> </P> <Dl> <Dd> L 1 2 l L 2 2 l ≈ 4 (L 2 L 1) 2 ⇒ (\ displaystyle (\ frac (\ frac (L_ (1)) (2l)) (\ frac (L_ (2)) (2l))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow \, \!) L 1 L 2 ≈ 4 (L 2 L 1) 2 ⇒ L 1 L 2 ≈ 4 3 (\ displaystyle (\ frac (L_ (1)) (L_ (2))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow (\ frac (L_ (1)) (L_ (2))) \ approx (\ sqrt ((3)) (4)) \, \!) </Dd> </Dl> </Td> <Td> <Table> <Tr> <Td> <P> </P> </Td> <Td> <P> </P> </Td> <Td> <P> </P> </Td> </Tr> <Tr> <Td> <P> </P> </Td> </Tr> </Table> </Td> <Td> <P> (8) </P> </Td> </Tr> <Dl> <Dd> L 1 2 l L 2 2 l ≈ 4 (L 2 L 1) 2 ⇒ (\ displaystyle (\ frac (\ frac (L_ (1)) (2l)) (\ frac (L_ (2)) (2l))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow \, \!) L 1 L 2 ≈ 4 (L 2 L 1) 2 ⇒ L 1 L 2 ≈ 4 3 (\ displaystyle (\ frac (L_ (1)) (L_ (2))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow (\ frac (L_ (1)) (L_ (2))) \ approx (\ sqrt ((3)) (4)) \, \!) </Dd> </Dl> <Dd> L 1 2 l L 2 2 l ≈ 4 (L 2 L 1) 2 ⇒ (\ displaystyle (\ frac (\ frac (L_ (1)) (2l)) (\ frac (L_ (2)) (2l))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow \, \!) L 1 L 2 ≈ 4 (L 2 L 1) 2 ⇒ L 1 L 2 ≈ 4 3 (\ displaystyle (\ frac (L_ (1)) (L_ (2))) \ approx 4 (\ left ((\ frac (L_ (2)) (L_ (1))) \ right)) ^ (2) \ Rightarrow (\ frac (L_ (1)) (L_ (2))) \ approx (\ sqrt ((3)) (4)) \, \!) </Dd>

What is the force of repulsion between two positively charged particles