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Ksju [112]
2 years ago
14

The advantages and disadvantages of using copper, steel and aluminium in electrical cables.

Physics
1 answer:
katrin [286]2 years ago
6 0
Advantages of copper cables are that copper is an extremely powerful conductor of electricity and much more stable over time. It can withstand higher temperatures than aluminum and is more resistant to damage. Disadvantages: Copper is more expensive and heavier and thus requires structural support. Advantages of aluminum cables are that it is less expensive, easier to work with and light weight and so does not need structural support when strung over long distance. Disadvantages: Aluminum is more susceptible to corrosion and requires periodic replacement. It needs much greater maintenance. Advantages of steel cables are that steel does not rust, is fairly cheap and readily available. It has a higher tensile strength too. Disadvantages: Steel cables are less ductile and are therefore more susceptible to fatigue.
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1. A 9000 kg van was stopped at a traffic light when it rear-ended with an 850 compact car moving to the east at a velocity of 5
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Answer:

1.785 m/s

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The momentum can be calculated using the expression below

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