Apple Product Design Engineer interview questions

What’s the definition of Young’s modulus

Q1: Brainstorm ways to get a balloons down from the ceiling or out of the house. They are looking for both creative and physics based methods. You should be able to name 15-20. Other similar brainstorm questions were asked. Q2: Explain how Apple's haptic devices work. For other teams, I'd imagine you will get a similar "reverse-engineer this device" question based on their specific technology. Q3: Explain design considerations for integrating haptic engines into a cell phone. For example, what material would you choose? Q4: Lots of questions centered around spring design and vibrational dynamics. This topic covered 80% of the interviews for the team I interviewed with. Q5: Teach the interviewer about one topic that you are an expert in. Be ready to answer technical follow-up questions. You should demonstrate passion and a willingness to dive deep into the fine details of physics. Surprisingly few questions on electromagnetics even though Apple's haptic engines are based on electromagnetics.