For each of the following, indicate whether it would lead to an increase or decrease in global temperatures by writing increase or decrease in the blank following each item. an increase in global cloud cover: melting of glaciers and ice caps: an increase in sunspot number: increased release of ash and sulfur dioxide from volcanoes: increased rates of chemical weathering:

By what primary heat transfer mechanism does the sun warm the earth?

Based on this activity, is kinetic energy always transformed into potential energy?

Intro: a solid ball of radius rb has a uniform charge density ρ. part a: what is the magnitude of the electric field e(r) at a distance r> rb from the center of the ball? express your answer in terms of ρ, rb, r, and ϵ0. part b: what is the magnitude of the electric field e(r) at a distance r express your answer in terms of ρ, rb, r, and ϵ0. part c: let e(r) represent the electric field due to the charged ball throughout all of space. which of the following statements about the electric field are true? check all that apply. e(0) = 0 e(rb)=0 limr→∞e(r)=0 the maximum electric field occurs when r=0 the maximum electric field occurs when r=rb the maximum electric field occurs as r→∞.