The depth of the potential well for free electrons in a metal can be accuratelydetermined by observing that the photoelectric work function is the energy necessary toremove an electron at the top of the occupied states from the metal; an electron in sucha state has the Fermi energy. Assuming each atom provides one free electron to the gas. Compute the depth of the well for the free electrons in gold. The work function for goldis 4.8 eV.

this isn't the answer but they're the graphs

learn it on the intertant so you can solve

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

see earlier answer