If you burn it a really long, the. It gets smaller, which is a physical change. Hope this helps!
You must know the masses of both objects and the gravitational constant used to calculate the gravitational force between the 2 objects.
Explanation:
The attached figure shows the position-time graph of a ladybug. We need to find the average speed of the ladybug between t = 4 s to t = 7 s.
We know that, the slope of a position-time graph gives velocity of an object. It can be given by :
In this case, the position of a ladybug at t = 4 s and at t = 7 s is the same i.e. 2 m.
It means its velocity is equal to at this time or we can say that ladybug is at rest.
I believe that the resistance of the wire is 12