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Two protons are held a distance d apart. The electrostatic force and the gravitational force that one proton exerts on the other are Fe and Fg, respectively. Which of the following correctly compares the magnitude and direction of these forces?
Fe > Fg, opposite direction

a. Fe > Fg, same direction
b. Fe < Fg opposite direction
c. Fe < Fg same direction

Respuesta :

Answer:

Explanation:

charge on each proton = 1.6 x 10ā»Ā¹ā¹ C

mass of proton = 1.67 x 10ā»Ā²ā· kg

Electrostatic force of repulsion Fe = 9 x 10ā¹ x ( 1.6 x 10ā»Ā¹ā¹ )Ā² / dĀ²

= 23.04 x 10ā»Ā²ā¹ / dĀ²

Gravitational Ā force of attraction = G Mm / dĀ²

M = m = 1.67 x 10ā»Ā²ā· kg

Gravitational Ā force of attraction Ā Fg = 6.67 Ā x 10ā»Ā¹Ā¹ x ( 1.67 x 10ā»Ā²ā· )Ā² / dĀ²

= 18.60 x 10ā»ā»ā¶āµ / dĀ²

So Fg is far less than Fe and former is attractive , later is repulsive .

Fe > Fg, opposite direction , is the answer .

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