Question 1 (1 point) question 1 unsaved worldwide, the most common type of electricity generation comes from question 1 options: a) solar power plants b) hydro power plants c) wood d) fossil fuels save question 2 (1 point) question 2 unsaved which of these is an agreement aimed at reducing harmful climate impacts? question 2 options: a) united nations b) powell pact c) kyoto protocol d) presidential environment agreement save question 3 (1 point) question 3 unsaved which of the following is a factor that will affect energy usage in the future? question 3 options: a) increasing population b) climate change c) higher living standards worldwide d) all of the above e) none of the above save question 4 (1 point) question 4 unsaved which of the following is not a prediction made about future energy usage? question 4 options: a) we could be using all renewable resources someday b) coal use will increase quite a bit this decade c) we may be able to develop a fusion based energy system. d) electricity usage will decrease in the near future due to shrinking world population

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