Question

liquids
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carla makes a small cardboard boat and floats it in a tub of water. when she adds a drop of dish soap behind the boat, the boat moves forward.
which statement best explains what happened?
○ the soap increased the viscosity of the water behind the boat, allowing the water in front of the boat to flow more easily.
○ the soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.
○ the soap increased the kinetic energy of the water molecules behind the boat, causing both the molecules and the boat to move forward.
○ the soap formed an immiscible layer on the water, causing the soap to spread out and push the boat forward.

Explanation:

way that causes forward motion, it does not significantly increase water molecule kinetic energy to move the boat, and soap mixes with water (it is not immiscible) rather than forming a layer to push the boat.

Answer:

way that causes forward motion, it does not significantly increase water molecule kinetic energy to move the boat, and soap mixes with water (it is not immiscible) rather than forming a layer to push the boat.