carla makes a small cardboard boat and floats it in a tub of water. when she adds a drop of dish soap behind…

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.\nwhich statement best explains what happened?\no the soap increased the viscosity of the water behind the boat, allowing the water in front of the boat to flow more easily.\no the soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.\no the soap increased the kinetic energy of the water molecules behind the boat, causing both the molecules and the boat to move forward.\no the soap formed an immiscible layer on the water, causing the soap to spread out and push the boat forward.

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.\nwhich statement best explains what happened?\no the soap increased the viscosity of the water behind the boat, allowing the water in front of the boat to flow more easily.\no the soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.\no the soap increased the kinetic energy of the water molecules behind the boat, causing both the molecules and the boat to move forward.\no the soap formed an immiscible layer on the water, causing the soap to spread out and push the boat forward.

Answer

Brief Explanations:

Surface - tension is a property of water that acts like a thin elastic film on the surface. Dish - soap is a surfactant which reduces surface tension. When soap is added behind the boat, the surface tension behind the boat decreases compared to the surface tension in front of the boat. This creates a net force that pulls the boat forward.

Answer:

The soap reduced the surface tension behind the boat, causing both water molecules and the boat to be pulled forward.