Which answer best represents the system's change in energy for the following process? the system includes earth, two carts, and a compressed spring between the carts. the spring is released, and in the final state, one cart is moving up a frictionless ramp until it stops. the other cart is moving in the opposite direction on a horizontal frictionless track.

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.

answer///isobars;

radial fractures in a piece of glass look most like which of the following?

a. spokes of a wheel

b. a circle

c. a zig zag

d. none of the above

the correct answer is a. spokes of a wheel

hope this (: