color
Color, smell, taste ...
One physical property that requires no tools, scales, or other equipment to determine is the state of matter (solid, liquid, gas) of a substance. This can be assessed simply by visual observation and understanding the characteristics of the material at a given temperature and pressure. For example, water at room temperature is a liquid, while ice is a solid and steam is a gas. Observing these states can be done without any specialized instruments.
A physical property can be observed without changing the sample. Chemical properties requires you to change the sample.
Colorless is a physical property. Determining change requires you to compare two things.
AR 710-2 requires a physical inventory of non-expendable property to be conducted at least annually. Additionally, inventories should be performed whenever there is a change in property accountability, such as a transfer of responsibility or when discrepancies are identified. Regular inventories ensure accurate accountability and management of government property.
a physical property a chemical property; physical properties are properties such as freezing/melting/boiling points
Chemical: flammability requires a chemical reaction to occur in the presence of oxygen at a sufficiently high temperature.
It would depend on the environment in which the equipment is being used
Yoga is an example of a physical activity that requires flexibility.
A tenancy by the entirety requires that the owners be legally married.
property of a body that requires force to change its state of motion
The type of knee problems or injury will ultimately determine the best equipment to help. It is very common to use a knee support brace (of which there are several kinds), however, for any knee injury that requires more than rest for recovery, the best thing to do is see a doctor, who can choose the best equipment for you.