Question

please solve this question and give a clear answer​

Answer 1

Answer:

the answer is the 109joules

Answer 2

Answer:

Option(D)

Explanation:

Given : AB + AC = 12 cm and AB ∙ AC = 32cm2

∴  AB = (32/AC)

∴ [(32)/(AC)] + AC = 12

⇒ 32 + AC² - 12AC = 0

⇒ AC² - 12AC + 32 = 0  

⇒ AC² - 4AC - 8AC + 32 = 0

⇒ AC(AC - 4) - 8(AC - 4) = 0

⇒ (AC - 4)(AC - 8) = 0

⇒ AC = 4 cm, 8 cm

Let AC = 4 cm Then, AB = 8 cm

Potential energy point A = VA = kq₁q₂[(1/AB) + (1/AC)]

⇒ 9 * 10⁹ * 24 * 10⁻⁶ * 24 * 10⁻⁶[(1/4) + (1/8)] * 10²

⇒ 5184 * 10⁻¹ * (12/32)

⇒ 194.4 J

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