Volume observed by an observer stationed on the earth, Physics

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A cube of side ‘a' is moving with speed 0.6 c normal to one of its face. What is its volume observed by an observer stationed on the earth ?

The volume of cube = a x a x a = a³.

Here a = side of cube

V = 0.6 c

Length constriction occurs to the side to which its speed is v.

The contracted length of side is volume of cube. Hence the new volume will be 0.8 times the previous volume.

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