Engineers tasked with building a car bumper need high-quality plastic that is readily available. they have found the material polycarbonate, which is long-lasting and not too costly.

which technological design criteria have they already met?
more than one answer!

be available

be affordable

be durable

solve the problem

not cause harm to others

Why cooking gas has a typical smell

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.