A clerk can lift cylindrical packages 1 meter vertically, or can roll them up a 2-meter-long ramp to the same elevation. With the ramp, the applied force required is about.

Give an example of the type and scale of economic activity for a traditional economy.

The authors use the word “backbone” in lines 3 and 39 to indicate that

Need will give 100 ! in no less than one hundred fifty words, explain why it is important for engineers to sketch designs and use them to clarify their designs to other people, giving at least three reasons.