[Answer] Which British theoretical physicist and author who died in 2018 said ‘Remember to look up at the stars and not down at your feet’?

Step 1 : Introduction to the question "Which British theoretical physicist and author who died in 2018 said ‘Remember to look up at the stars and not down at your feet’?"

...CONTEST AND DETAILS & HOW TO ENTER: 1. This Contest Will Commence OnWed Sep 18 2019 09:24:29 GMT+0530 (IST)From 08:00:01 A.M. (IST) To 12:00:00 P.M. (IST) (“Contest Period”) 2. In Order To Be Eligible For The Contest, During The Contest Period You Must Sign-In To Or Sign-Up From An Account On The Amazon.In App (“Amazon.In App”). 3. Once You Have Signed-In To The Amazon.In App, You Can Participate By Navigating To The Page Where 5 (Five) Questions Will Be Posted During The Entire Contest Period.

[Answer] 7. Ernst Mach was a physicist who introduced the mach number. What is the mach number?

Step 1 : Introduction to the question "7. Ernst Mach was a physicist who introduced the mach number. What is the mach number?"

...1. The number of burgers one can eat at McDonald's 2. The number of blades in a shaving razor 3. A measurement related to speed 4. The strength of a diamond Ernst Mach was an Austrian physicist and philosopher who introduced the concept of Mach number (named after him). The Mach number is a measurement of the ratio of the speed of a moving body to the speed of sound. When objects like aircraft or missiles travel at the speed of sound, the object's speed is measured using the unit Mach.

[Ans] in 1976, composer philip glass debuted an opera named after which famous physicist?

Step 1 : Introduction to the question "in 1976, composer philip glass debuted an opera named after which famous physicist?"

Glass's compositions have been described as minimal music, similar to other "minimalist" composers including La Monte Young, Steve Reich and Terry Riley. However, Glass has described himself instead as a composer of "music with repetitive structures", which he has helped evolve stylistically