Find the gravitational force between an electron and a proton that are 10-¹¹m apart.
Correct answer: B. 1.0 x 10^-45 N
- A. 1.0 x 10^-67 N
- B. 1.0 x 10^-45 N
- C. 1.0 x 10^-22 N
- D. 1.0 x 10^-89 N
Explanation
The correct answer is Option B: 1.0 x 10-45 N. The gravitational force between two objects can be determined using Newton's Law of Universal Gravitation, which states F = G * (m1 * m2 / r2). Here, G is the gravitational constant (6.674 x 10-11 N m2/kg2), m1 is the mass of the proton (1.67 x 10-27 kg), m2 is the mass of the electron (9.11 x 10-31 kg), and r is the distance between them (1.0 x 10-11 m). Substituting these values into the formula gives the correct force. Option A and D underestimate the force due to incorrect calculations, while Option C overestimates it.
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