The figure below shows three cylindrical copper conductors along with their face areas and
lengths. Discuss in which geometrical shape the resistance will be highest.
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If a train travels at a constant velocity of 60 km per hour for 5 hours continuously, then the acceleration achieved by this train is ______ .*
1️⃣ positive
2️⃣ negative
3️⃣ zero
4️⃣ positive and negativeLet distance from A to B=x km= distance from B to A.
Time taken by train from A to B =60x hr
Time taken by train from B to A =80x hr
Total time taken by train =60x+80x=2407x hr
average speed=total timetotal distance=2407x2x=7480 km h−1
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