ELI5 Dishwashers - why do plastics come out wet and ceramics dry?

Why is tupperware wet coming out of the dishwasher, when plates and glasses are all dry? Why do tomatoes stain in a dishwasher? What makes something dishwasher safe, or only top rack dishwasher safe? How are industrial dishwasher so much quicker than the ones at home? Which uses more water, using a dishwasher or hand washing? ... we explain like I'm five Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: napalmfires, storypenguin, ieuantemplar, nomisnairda, warlocktx, hagenaar, where_da_party_at, voiceofchris and andcarro To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter: https://www.twitter.com/eli5ThePodcast/ or send us an e-mail: [email protected]