Limited amount of time

engineers are looking for a new material to build an oil tanker. the material must be lightweight, strong, and durable. several engineers have developed some initial plans.

the engineers are in which stage of technological design?

identifying a problem or need
designing a solution
implementing a solution
evaluating a solution

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

scientific laws are the result of testing theories and proving them to be facts.

no. dot product   =0 when vecs at right angles

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.