An engineer in team has a goal of developing a bicycle frame that is built lighter and stronger than previous models. Which cost benefit analysis has left a potential risk? A. Better function compared to ecological damage of mining material and research and development time.
B. Increase sales compared to employee stress and loss of natural resources
C. Increase sales compared to research and development time and cost of materials.
D. Better function compare to uncertain supply of materials and research and development time.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

I’m an electrically neutral atomic any element, there are equal numbers of