two positive point charges are a fixed distance apart. the sum of their charges is Qt. what charge must each have in order to (a) to maximise the electric force between them (b) minimise it?

What are similarities and differences of reflection, refraction, diffraction and absorption?

Although longitudinal waves can travel through all media types what is the disadvantage of this type of wave transmission? a) he efficiency of he wave transmission is greatly diminished as the media becomes less dense b) the oscillation of one set of particles has a huge impact on neighboring particles c) particles become too close together as they bump into each other making it more likely to hit other particles down the line

Which of the following are appropriate acceleration units?