The ability to move an electric charge from one point to another is

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=

What is an example of static friction

Based on the diagram of the electric field lines around the two spherical charges, what are the signs of the left and right charge respectively?