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Write the reason:-
i.Tractor have broad tyres on there rear wheel.Why?
ii.Mercury is used in thermometer.Why?
iii.Copper is used to make electric wire.Why?
iv.Why the shoes of sports person having spike.
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- tractors have broad tires on their rear wheels to help in supporting body weight
- mercury is used in thermometer because mercury has high melting point so it can easily identify a small change in temperature
- copper is used to make electric wires because it is a good conductor of electricity and does catches fire easily.
- the shoes of sports have spike to help in better gripping to the ground.Due to the spikes a large force acts on ground because of small area of contact and thus it results in better grip
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