Calculate the force exerted on a point charge of 5x10-6 by the action of two other electric charges of 2x10-6 each also punctual,
make the corresponding figure of distance 2 m.

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Describe the function of the endomembrane system? what organelles are involved?