Question

If the mass of a proton is 1.67×10^-27kg and the mass of an electron is 9.11×10^-31kg.Calculate the force of gravitation between;(1) A proton and an electron (2) Two electrons (3) Two protons.Take G=6.67×10^-11Nm^2kg^-2, distance between the protons =4.0m, distance between the proton and the electron =5.4×10^-11m



Just plug in your numbers. Check t be sure they are all given in the right units.

F = GMm/r^2

for an electron and a proton, that would be

F = 6.67×10^-11 * 9.11×10^-31 * 1.67×10^-27/ (5.4×10^-11)^2
= 6.67*9.11*1.67/5.4^2 × 10^(-11-31-27+22)
= 3.48×10^-47
some one help

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