Avalanches
choose one:
a. can be triggered by explosions, people, or even just new snow.
b. always contain snow and/or ice.
c. never happen twice in the same place; therefore, the pathway an avalanche creates is a safe place to build.
d. are slow mass-movement events.

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force

Elements on the periodic table are ordered according to their

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→∞.