15. liquid
16. Shape
17. Volume
18. Shape
Answer:
Magnetism
Explanation:
The carpenter can separate the iron nails from the plastic nails using a magnet. The iron nails have magnetic properties therefore they would be attracted to the magnet living only the plastic nails. This process is known as magnetic separation because it is based on the physical properties of the mixed components separating a mixture of components containing magnetic and non magnetic materials.
Answer:
The self-inductance is 
Explanation:
From the question we are told that
The number of loops is 
The length of the rod is 
The radius of the rod is 
The self-inductance for the solenoid is mathematically represented as
Now the cross-sectional of the solenoid is mathematically evaluated as
substituting values
and 
is the permeability of free space with a value 
substituting values into above equation
With more genetic variations, the more adaptations will be developed that will help the population survive the changing environment.
For example, if an environment starts to grow lighter fields, a population will start to develop genetic variation that will help camouflage the animal. Like, make the animal start to have lighter skin to camouflage.
