There are three buckets with water, air, and gasoline. If you put a sensor in the buckets, what type of sensing technology would you use to tell them apart?

Mechanical Engineering Mechanical Design
1

You have three buckets each 10 degrees Celsius. one is water, the other air, and the third gasoline. If you put a puck in the buckets what type of sensing technology would you use to tell them apart.

2

Use a weighing device. These fluids have known densities and it would be simple and cheap.

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