Gravity is a non contact force that depends on the masses of objects and the distance between them. Describe two ways you can increase the gravitational force between two objects.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it