Which of the following actions could a person do to show how heat moves through conduction? А
A camper melts some marshmallows by holding them over a campfire.
B
A person uses an electric blanket to warm up on a cold evening.
с
A chef waits as pasta noodles rise and fall in a pot of boiling water.
D
A farmer heats up a metal rod to use as a brand by placing it into a fire.

The least penetrating form of radiation is

The ozone hole appears in antarctica during

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin. answer in one word. part bfind e(r), the magnitude of the electric field at distance r from the point charge q. express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q. express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r