To solve this problem we will start by defining the length of the shortest stick as 'x'. And the magnitude of the longest stick, according to the statement as

Both cover a magnitude of 8.32 ft, therefore

Now solving for x we have,





Therefore the shorter stick is 2.695ft long.
Explanation:
Wavelength in an emission spectrum,
The energy of an electron is given by :

Where
h is the Planck's constant
c is the speed of light
For 435 nm, the energy of the electron will be :


We know that 
So, 
So, E = 2.86 eV
The energy of the electron dropping from one energy level is 2.86 eV. We know that,

From the given energy levels :

So, the transition must be from E₅ to E₂. Hence, this is the required solution.
Its would be a radio. because it is the only electrical one out of the choices
<span>The electric force between two charged objects depends on
the product of their charges and the distance between them.</span>