Why is it easier to park a car in reverse?

Also, how a grille with holes keeps microwaves in the oven, and how fast is a meteor moving?
08 July 2020

TYRE-PRINTS.jpg

Tyre tracks on the ground

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This week, the intriguing question of how visible light, but not microwaves, can escape through the grille of a microwave oven, how far Earth and Mars are apart, the speed of a falling meteor, why parking a car in reverse is easier, the reason that oil and water won't mix, and the prospects of alien life. Join Dr Chris Smith and Talk Radio 702's Azania Mosaka for the answers...

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