A “Sandwich” of cardboard and another material separates a magnet and iron nail. insert which of the following materials into the sandwich will cause the iron to fall away?

A. Aluminum
B. Glass
C. Iron
D. Paper
E. Wood

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

Global climatic patterns are changing because of the melting of polar ice caps. the melting of polar ice caps is an example of the interaction between the atmosphere and cryosphere cryosphere and geosphere hydrosphere and geosphere biosphere and cryosphere

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.