1. water flows through a very long 52 mm id (internal diameter) drawn copper pipe. the pipe is
horizontal and has an internal roughness height of ε = 0.0015 mm. the pressure drop along a
200m long section of the pipe is 100 kpa. find the friction factorſ. reynolds number and average
speed of the flow in the pipe. is the pipe flow laminar or turbulent?
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each year on this day, i make it a point to listen to dr. martin luther king jr.’s great “i have a dream” speech. it’s electrifying every single time.

the content of dr. king’s speech, his inspiring presence, and the moment in history all came together to make the iconic “i have a dream” speech the defining moment of the american civil rights movement. but there are several other reasons why this speech, delivered over 50 years ago, remains an example of one of the best speeches in american history.

since part of my job is to people become better presenters, i’ve noticed several techniques that we can all learn from and be inspired by in this magnificent speech.

it’s anchored in a powerful related location

in most cases, you can’t handpick the spot to give a presentation, as mlk did for supreme symbolic effect when he stood on the steps of the lincoln memorial and echoed the opening words of the gettysburg address (“five score years ago . . ). but you absolutely can amplify your message by adapting it to your setting and location.

absolutism the political belief that one ruler should hold all of the power within the boundaries of a country.