Which of the following would increase the mechanical advantage of a lever A. Moving the fulcrum closer to the output force.
B. Moving the fulcrum farther from the output force.
C. Increasing the input force without moving the fulcrum.
D. Decreasing the input force without moving the fulcrum.

c. rb

explanation:

the atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.