John was asked to design a skin care product. Before making his product, he researched the topic, and then decided on possible solutions to test. He then placed his product on the market. Which step of the Engineering Design Process did John skip? *

How are elements arranged in a periodic table

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?