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chubhunter [2.5K]

3 years ago

8

Why are experimental investigations the best type of scientific investigation o demonstrat cause-and-effect relationships?

2 answers:

Rainbow [258]3 years ago

8 0

Answer:

Isolation of Variables.

Explanation:

I am just taking a guess but Experimental investigations allow you to isolate variables (making most variables constant, allowing only the independent variable to have an impact on the dependent variable). With other scientific investigations, if they don't isolate the variables it is very possible that an unknown third variable could be skewing the results (which will result in correlation but not causation).

lukranit [14]3 years ago

5 0

Answer:

Experimental investigations are the best type of scientific investigation to demonstrate cause-and-effect relationships because they allow the investigator to actively manipulate variables and control conditions. The independent variable can be isolated and manipulated, producing a change (or no change) in the dependent variable. This change can be measured to gather evidence to support or refute the cause-and-effect relationship. Experimental investigations also use a control group (a group that does not receive the factor being tested) for comparison.

Explanation:

Automated-response....it's right

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b) $6 \Omega$ , 1.33 A

Explanation:

a)

In this situation, we have two resistors connected in series.

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b)

In this part, a third resistor is added in series to the circuit; so the new equivalent resistance of the circuit is

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And the three resistors are connected in series, therefore the current flowing through each resistor is the same, 1.33 A.

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