The laser pointer emits light because electrons in the material are excited (by a battery) from their ground state to an upper excited state. when the electrons return to the ground state, they lose the excess energy in the form of 660. nm photons. what is the energy gap between the ground state and excited state in the laser material?

When discussing comparative and absolute advantage, which best describes specialization? developing expertise in certain types of production limiting the types of goods and services produced targeting specific consumers and retailers producing certain items for specific market segments the answer is: the act of limiting the kinds of goods and services produced

What was a main difference between franch conversation and liberals following the congress of vienna

Which statement is not true about the missouri compromise? 1.) slave owners could pursue escaped slaves into “free” regions. 2.) maine entered the union as a free state. 3.) slavery was allowed throughout the louisiana territory. 4.) missouri entered the union as a slave state.