Density and Upthrust
* Upthrust is the upward force exerted by a fluid on an object submerged in it. It's directly related to the density of the fluid.
* Denser fluids exert a greater upthrust force.
Density of Water and Temperature
* Hot water is less dense than cold water. This is because when water is heated, its molecules move faster and spread out further, making it less packed together.
* Lower density means lower upthrust.
Conclusion
Therefore, an object submerged in hot water will experience a slightly lower upthrust force compared to when it's submerged in cold water. This is a subtle effect, but it's important to understand the relationship between density, temperature, and upthrust.