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    Which pair of experiments indicates that retarding ... ...

    Which pair of experiments indicates that retarding force does not depend on the density of the object?
(A) 1 and 2
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 01. Introduction

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Replies to This Thread: 1 | ----
 
Posted: 04/05/2013 20:16
How do the densities in experiments 2 & 3 change? It looks like they're staying the same to me.
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Posted: 04/16/2013 20:00
Hi Dani, we are not given numerical data about the density. Instead, we are told that according to the experimental results, the retarding force F is the same in 2 and 3 when the other factors are the same, but the object changes from a steel ball to a cork ... which obviously have different densities. Hence the conclusion is that F is not dependent on density.
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