Rebekah is studying a molecule and trying to determine if it is DNA or RNA. Which kind of molecule is she studying?

carbohydrate
protein
nucleic acid
lipid

An electric current is flowing through the cord below. what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

If steel is more dense that lake water, why can a boat float

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.