What term describes the ability of something to float on water
2 answers:
Answer:
Explanation:
Let's define each answer choice.
A. Density
- The amount of mass in a certain space
B. Buoyancy
- The tendency of an object to float on a fluid/water
C. Magnetism
- The ability of objects to product attracting or repulsing fields
D. Solubility
- The ability to dissolve
The definition that matches "the ability for something to float on water" is buoyancy. Therefore, the correct answer is B. Buoyancy
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Answer : At constant pressure work is done by the system on the surroundings.
Explanation :
Work done : Any quantity that flows across the boundary of a system during a change in its state and it completely convertible into the lifting of a weight in the surroundings.
Formula for work done is:
Sign convention :
- When volume expand then system work that means work done by the system.
w = (-ve)
- When volume compress then surrounding work that means work done on the system.
w = (+ve)
The given reaction is:
This is a evaporation process in which phase changes from liquid state to gaseous state at constant temperature.
At constant pressure, work depends only on volume.
In evaporation process, the volume expand that means work is done by the system on the surroundings.
Sign convention is, w = (-ve)
Thus, at constant pressure work is done by the system on the surroundings.