Answer: Well N.W.A is a hip hop group that started back in the late 1900s back then they where pretty cool and fun to listen too well there music was about how life was when they where young well thats all i can say unless you talking about something different.
Explanation:
B: heat is transferred as thermal energy by the interaction of moving particles
Atomic emission spectra are like fingerprints for the elements, because it can show the number of orbits in that elements as well as the energy levels of that element. As each emission of atomic spectra is unique, it is the fingerprint of element.
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Each element has unique arrangement of electrons in different energy levels or orbits. So depending upon the difference in energy of the orbital, the emission spectra will be varying for each element. As the binding energy and excitation energy is not common for any two elements, so the spectra obtained when those excited electrons will release energy to ground state will also be unique.
As in atomic emission spectra, the incident light will be absorbed by the electrons of those elements making the electron to excite, then the excited electron will return to ground state on emission of radiation of energy. Thus, this energy of emission is equal to the difference between the energy of initial and final orbital. So the spectra will act like fingerprints for elements.
Answer:
It is directed inward, toward the center of a circle.
