Answer:
Burning of canful of petrol will release more energy 
Explanation:
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Answer:
All planets have an elliptical orbit
all planets have roughly the same SHAPE of orbit
 
        
                    
             
        
        
        
The gravitational force will be one quarter.
The gravitational force between two objects is given by the formula
F=GMm/r^2 
here, r is the distance between the objects.
Thus the gravitational force is inversely proportional to the square of the distance between the objects, Therefore if the distance between two objects is doubled the force will be one quarter.