d. the surface on which the object is moving is made smoother
This is called lubrication, I think ...
b. the weight of the moving object is decreased
If there is less araea of contact because of the weight reduction ("squeezing together") then this could also have an effexct. I thinl though the thrust of the q is on lubrication = oil, talcum powder, thin films of water etc
Please put answers in the comments of actual answers, as I need them! Lots of points! 63 points
Answer:
Burning of canful of petrol will release more energy
Explanation:
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Answer: Energy from the core travels by radiation through the radiative
zone, then by convection through the convection zone.
Explanation: