After many years of purchasing electricity from a faraway city, a town decides to generate its own electricity by constructing a coal-fired power plant.
a. Briefly discuss the process by which a typical coal-fired power plant generates electricity. Identify one advantage and one disadvantage of using coal rather than oil to generate electricity.
b. Identify one primary air pollutant likely to be emitted by the new coal-fired power plant. Identify one secondary pollutant likely to result from this primary pollutant, and describe the process by which the primary pollutant is converted into the secondary pollutant.
c. Describe one negative effect that either of the pollutants identified in part (b) could have on the health of the townspeople. Describe one negative effect that either of the pollutants identified in part (b) could have on the surrounding environment.
d. Explain how coal-fired power plants contribute to global climate change. Discuss an alternative source of energy for the town (other than continuing to purchase electricity from another community) that would not contribute to global climate change.

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?

Positive ions differ from neutral atoms in that