题目
多重下拉选择题
The force of gravity between two people, one with a mass of 65.1kg and the other with a mass of 71.0 kg who are standing 2.50 meters apart is calculated and written in the form of a.b x 10c m. Use the formula of gravitational force to determine the values of a,b and c. The value of a : Blank 1 Question 35[select: , 4, 5, -8, 2, 3] The value of b : Blank 2 Question 35[select: , 93, 0, 9, 932] The value of c : Blank 3 Question 35[select: , 4, 5, -8, 2, 3] (A:3)
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思路分析
The problem asks for the gravitational force between two masses and to express it in the form a.b × 10^c with a, b, c chosen from given options.
First, recall the gravitational force formula: F = G * (m1 * m2) / r^2, where G ≈ 6.67 × 10^-11 N·m^2/kg^2, m1 = 65.1 kg, m2 = 71.0 kg, and r = 2.50 m. This leads to F ≈ (6.67 × 10^-11) * (65.1 × 71.0) / (2.50)^2.
Now consider the products and powers: 65.1 × 71.0 ≈ 4622.1, and (2.50)^2 = 6.25. So F ≈ (6.67 × 10^-11) × 4622.1 / 6.25.
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