In 1983 there were 100,000 transistors on a typical computer chip. (a) by moore's law, in which year we should have had 6.4 million transistors on a chip of same size? (b) if the size of the chip was 1cm x 1cm, what was linear size of the transistor in 1983 and later when there were 6.4 million transistors on the chip?

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.