Consider a particle with charge e moving under a three dimensional isotropic harmonic potential: in an electric field a) write the unperturbed and perturbed hamiltonian. b) find the exact energy eigenvalues of the particle in the perturbed state. find the degeneracy for the first and second excited state.

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.

i don't understand. explain it clearly

i would say

b. a lightning bug, plug of grass, and a worm