In this question the options are missing; here are the options:
What was the dependent variable in Drew's experiment?
A. The depth at which the algae were found
B. The sky conditions on a particular day
C. The amount of algae measured
D. The lake that was being observed
The answer to this question A. The depth at which the algae were found
Explanation:
In an experiment, it is common there are at least two factors or variables. Additionally, the variable that is modified by others or that depend on others is always the dependent variable.
In the case of the experiment presented, there are two main factors: sky conditions and depth at which algae can be found. From these, the dependent factor is the depth because this depth changes with the sky condition or depends on the sky conditions. Also, the dependent variable is always the factor being studied, for example, in this case, Drew's focus is to study how the location of algae in terms of depth changes.
Answer:
4.55
Explanation:
The terminal speed of a diver is given by:
The dispersive power of the material of the prism is independent of the shape, angle of prism or size of the prism. It depends only on the refractive index 
of the material of the prism.
Answer:
Explanation:
Silver is a generally excellent conductor, this implies its resistivity is low (from table, we can check the exact worth i.e 
)
Pure water, rather, is an extremely awful conductor, this implies its resistivity is exceptionally high, of order of 
Indeed, even without knowing the exact estimation of the pure water resistivity, we can appraise the proportion between the pure water resistivity and the silver resistivity by looking at the two orders of magnitude:
Therefore, we can say that the correct answer is
The field reverses its poles, meaning that the flow of negative and positive charges will cause an overall switch in the magnetic poles of the field.
