PLS HELP!! Which correctly identifies a type of heat transfer shown in the figure above?
C = radiation
B = conduction
A = convection
A = radiation

Asimply means that over time there was some sort of change.

How would doubling the made of an object change the objects potential energy

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.