Answer:
A control should have been included in the investigation
Explanation:
It is impossible for the student to interpret a correct conclusion about his experiment, without adding a control treatment where he can really compare the differences between the variables.
Control treatment is an element of research that receives all factors, except the variable being tested. The control serves to make comparisons with the other treatments, allowing to observe the exact difference between a system where the variable was tested and the system where it was not.
In the case of the question above, it would have been necessary for the student to have placed a cart on a ramp of normal height and without sandpaper. That way he could compare the speed between this cart and the carts on the other ramps, thus having a correct result.
48% of people pay less than $500 for book formatting. 30% of people pay $500-$1,000 for book formatting. 10% of people pay $1,000-$1,500 for book formatting. 12% of people pay $1,500+ for book formatting
so around $500
The stamp act of 1765 imposed tax on all American Colonists. Almost everything they bought was taxed on.
Answer:
A good constitution must have the following qualities.
1) Clarity or definiteness : Every clause of the Constitution should be written in simple language.
2) Brevity : The constitution should not be lengthy.
3) Comprehensiveness .
4) Flexibility.
5) Declaration of rights.
6) Independence of judiciary.
7) Directive principales of state policy.
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4) Flexibility
