Units
293-299 K
Room temperature
In pipe flow, at low velocities the fluid moves in smooth layers (laminar). When velocity increases past a critical point, the flow becomes chaotic and is described by this word.
What is turbulent?
A beam supported at both ends sags in the middle under load. The top fibers are in compression. The bottom fibers are in this state.
What is tension?
Pi
What is 3? (3.1 if using a calculator)
The amount of centimeters in an inch.
2.54
amount of energy needed to raise the temperature of 1 gram of water by 1 degree (specifically 14.5 from 15.5 C)
Calorie
You pull a rubber band and release it — it snaps back. This reversible behavior is called this type of deformation.
What is elastic deformation?
For a triangular distributed load on a cantilever beam, the equivalent point force equals the area under the load curve and is placed at this fraction of the base length from the larger end.
What is one-third (1/3)?
This is what we are assuming about the surface in question.
What is friction-less?
Gravity on Earth in meters/second/second
What is 9.81?
A unit used to measure the length of a bridge. He would later be named chairman of the ISO.
Smoots
A dimensionless quantity in fluid mechanics that predicts flow patterns by calculating the ratio of inertial forces to viscous forces within a fluid.
What is the Reynolds number?
When a truss member connects to a joint where no external load acts and the only other member is perpendicular to it, this member carries zero force and is called this.
What is a zero-force member?
Where all *useful* values can be found.
What are charts?
The amount of pounds in a kilogram.
What is 2.205?
Linear mass density
Denier
This transform converts f(t)f(t) into F(s)=∫0∞f(t)e−stdtF(s)=∫0∞f(t)e−stdt and is used to solve ODEs in controls and circuits.
What is the Laplace Transform?
On a stress-strain diagram, the initial linear region where deformation is reversible describes both elastic behavior and this property, defined as the slope of that region.
What is Young's modulus?
A lifelong neurodevelopmental condition that affects how a person perceives the world, interacts with others, and communicates.
What is an engineer?
The speed of sound (at sea level at 20 C)
343 m / s, 1,125 ft/s; 1,235 km/h; 767 mph; 667 kn, or 1 km in 2.92 s or one mile in 4.69 s