The largest blocks in the Great Pyramid weigh 15 tons (about 13,600 kg). Dragging such a block up a ramp with a mechanical advantage of 3 would require a force of 45,000 N. If 900,000 J of work was done on the block to move it up the ramp, neglecting friction, how far was the block moved?

found in the nucleus

has mass of one amu

this could be newton#'s law of cooling. the cooling curve is exponential

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.