Thermodynamics
dU = Q + W
the first law of Thermodynamics
Named after a French engineer, this dimensionless number characterizes flow patterns in fluids
the Reynolds number
What is the hardest known natural material?
Diamonds
This thermodynamic property is a measure of the disorder or randomness in a system.
entropy
PV = nRT
What is the Ideal Gas Law?
if the physical process is irreversible, the entropy of the system and the environment must increase; the final entropy must be greater than the initial entropy
the second law of thermodynamics
What is the lightest planet?
Saturn (it's so light it could float in water)
What type of heat transfer does this situation represent?
The pavement heats up on a summer day
Radiation
What are the three layers of the Earth?
crust, core, mantle
Which country consumes the most chocolate per capita?
Switzerland
How many elements are in the periodic table?
118
A stagnation point is a point in fluid flow where
a)total energy is zero
b)pressure is zero
c)velocity of flow is zero
d)total energy is maximum
c)velocity of flow is zero
This device, essential in many power generation systems, operates on the principle of converting heat energy into mechanical work by expanding steam
a steam turbine
For the following, will there be a positive, negative, or lack of change in entropy?
CO2 (g) --> CO2 (s)
Negative; going from less ordered to more ordered phase
How many eyes do bees have?
5
What is a cow-bison hybrid called?
a beefalo
In fluid dynamics, this type of flow is characterized by chaotic changes in pressure and flow velocity. It is opposed to laminar flow.
turbulent flow
What is the national animal of Scotland?
The Unicorn
Explain how the change affects the entropy of a system (increases or decreases).
Dissolving a gas
entropy decreases
This property, represented by the symbol ยต, measures a fluid's resistance to flow.
viscosity
This thermodynamic process occurs without any exchange of heat between a system and its surroundings
an adiabatic process
The mathematical difference between irrotational and inviscid flow.
none
This correlation is used to calculate the average Nusselt number for free convection around a vertical plate.
the Churchill-Chu correlation
In the UK what is the day after Christmas Day called?
Boxing Day
Named after a Belgian physicist, this equation describes the behavior of real gases by accounting for their non-ideal interactions.
Van Der Waals equation