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# Discussions

Discussions on engineering-themed topics on, infrastructure, ethics, career opportunities and career advancement strategies.

## Brain Teaser – Ships

There are 5 ships in a port

## Brain Teaser – A Book

A book has N pages, numbered the usual way, from 1 to N. The total number of digits in the page numbers is 1,095. How many pages does the book have?

## Reidar Finsrud’s perpetual motion machine

The perpetual motion machine created by Danish artist, Reidar Finsrud is quite impressive and would make a great addition in an engineer’s living room but would a scaled up version be an efficient in generating electricity?

## Calculate the velocity of water coming out of a double-entry pipe

If we know the volumetric flow rates of the water going into the two branches, then what would be the velocity of the water coming out?

## New Brain Teaser – What is that number?

There is a number less than 3000 that when divided by 2 leaves a remainder of  1, when divided by 3 leaves a remainder of 2, when divided by 4 leaves a remainder of 3, When divided by 5 leaves a remainder of 4, when divided by 6 leaves a …

## 3 Questions for an Engineer

1. How much does a house weigh? 2. How much weight can a rural two-lane bridge hold? Click to Zoom 3. And finally, would this be covered under the home insurance or the car insurance policy?

## DISCUSS: How can Engineering Help Developing Nations Solve Critical Problems?

I was recently listening to Dr. Tony Marjoram, the former head of engineering sciences at UNESCO on  his discussion on how engineering can help developing nations solve critical problems.   It was a quite stimulating discussion in which Dr. Marjoram provides the following blueprint answering the subject question: He acknowledges that …

## A Great Engineer and Author – Nevil Shute

Every now and then we feature engineers that have contributed significantly to our profession. These exercises are simply to remind you of the important role that we play as engineers and also to provide useful insights into the lives of celebrated engineers, scientists and even authors. Nevil Shute is one …