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 4.5 104 N. If 9.0 105 J of work was done on the block to move it up the ramp, neglecting friction, how far was the block moved?

It's because 3 if it was 10 it wouldn't look right do it goes up to 4d

Molybdeum(mo)orruthenium (ru)actually, elements with similar chemical properties as technetium would bemn, re, and bh. this is because elements in the same group/family (column) have similar chemical properties. elements in the same period (row) have the same number of energy levels (or shells).

Good moring let me you on this question the answer the electric force  have a good day ; )