Question

Which experimental setup would let a student investigate the connection between kinetic energy and temperature?(1 point)
Responses

placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing one drop of food coloring in a second cup with 100 mL of water at 10ºC
placing one drop of food coloring in a cup with 50 m L of water at 10 degree celsius ; placing one drop of food coloring in a second cup with 100 m L of water at 10 degree celsius

placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing two drops of food coloring in a second cup with 100 mL of water at 40ºC
placing one drop of food coloring in a cup with 50 m L of water at 10 degree celsius ; placing two drops of food coloring in a second cup with 100 m L of water at 40 degree celsius

placing one drop of food coloring in a cup with 50 mL of water at 10 ºC; placing two drops of food coloring in a second cup with 50 mL of water at 10 ºC
placing one drop of food coloring in a cup with 50 m L of water at 10 degree celsius ; placing two drops of food coloring in a second cup with 50 m L of water at 10 degree celsius

placing one drop of food coloring in a cup with 50 mL of water at 10ºC; placing one drop of food coloring in a second cup with 50 mL of water at 40ºC
placing one drop of food coloring in a cup with 50 m L of water at 10 degree celsius ; placing one drop of food coloring in a second cup with 50 m L of water at 40 degree celsius
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Answer 1

The last option: one drop in 50 mL of water at 10°C and one drop in 50 mL of water at 40°C.

Reason: this keeps volume and drop size constant and only changes temperature, so any difference in dye spreading is due to the change in kinetic energy (temperature).