The pressure of the air in a car tyre is greater on a hot day , than on a cold day.
Why is the pressure greater on a hot day?Immersive Reader
1 The air molecules strike each other more frequently.
2 The air molecules strike each other with greater force.
3 The air molecules strike the tyre walls more frequently.
4 The number of air molecules in the tyre increases.
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2 option is your correct answer
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