3 years ago

In order to design an experiment, you need a ____ about the scientific question you are trying to answer.

Physics

2 answers:

frez [133]3 years ago

8 0

In order to design an experiment, you need a hypothesis about the scientific question you are trying to answer.

goldenfox [79]3 years ago

6 0

In order to design an experiment, you need a hypothesis about the scientific question you are trying to answer.

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If you walk 1.2 km north and then 1.6 km east, what are the magnitude and direction of your resultant displacement?

vodomira [7]

Answer:

Option A is the correct answer.

Explanation:

Let the east point towards positive X-axis and north point towards positive Y-axis.

First walking 1.2 km north, displacement = 1.2 j km

Secondly 1.6 km east, displacement = 1.6 i km

Total displacement = (1.6 i + 1.2 j) km

Magnitude = $\sqrt{1.2^2+1.6^2} = 2 km$

Angle of resultant with positive X - axis = $tan^{-1}(1.2/1.6)=36.87^0$ = 36.87⁰ east of north.

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