Question

A genius can only solve this question.
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.​

Answer 1

1. tractors have broad tires on their rear wheels to help in supporting body weight
2. mercury is used in thermometer because mercury has high melting point so it can easily identify a small change in temperature
3. copper is used to make electric wires because it is a good conductor of electricity and does catches fire easily.
4. 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