An engineer sketches detailed drawings of the keypad of a new cell phone. What stage in the product development life cycle is this? O concept development
O product testing
detailed product design
O product systems design

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

You are making beer. the first step is filling the glass carboy with the liquid wort. the internal diameter of the carboy is 15 in., and you wish to fill it up to a depth of 2 ft. if your wort is drawn from the kettle using a siphon process that flows at 3 gpm, how long will it take to fill?

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.