Pressure 1 (basics and Pascal's Principle)
What is the SI unit of density?
kg/m3
What is the SI unit of pressure?
Pascals (Pa)
What are the SI units of temperature?
Degrees Celcius (sometimes), Kelvin
What is the SI unit of heat?
Joules
What are the base three concepts used in this class and their SI units?
Displacement (m), Time (s), Mass (kg)
How do you calculate density?
Mass / Volume
What is the technical calculation for pressure?
Force / Area
How do you convert between Degrees Fahrenheit and Degrees Celsius, and how do you convert between Degrees Celsius and Kelvin?
Fahrenheit->Celsius: (T-32)*(5/9)
Celsius->Fahrenheit: (9/5)F +32
Celsius-> Kelvin: T+273.15
What is another commonly used measurement of heat?
calories or kilocalories (Calories)
Btu's
What is the SI unit of force, and what is it expanded into base units?
Newtons (N), kg * m / s2
What is Pascal's Principle?
F2 = F1(A2/A1)
What is the relationship between depth in a fluid and pressure?
Add {[rho] * g * h} to the pressure at a known point
What is the law of linear thermal expansion?
[change in L] = [alpha]*L0*[change in T]
What is the equation detailing the relationship between heat transfer and temperature change?
Q = c*m*[change in T]
What is the SI unit of work, and what is it expanded into base units?
Joules (J), kg * m2 / s2
A dog with a mass of 40 kg sits on one end of a hydraulic setup (surface area = 1.5 square meters). How much force would you have to push with on the other end (surface area = 0.8 square meters) to keep the dog from sinking?
F = 209 N
What is Archimedes' Principle (Expanded)
Fb = Wd = [rho]d * Vd * g
What makes Kelvin different from Degrees Fahrenheit and Degrees Celsius?
It is an absolute measure of temperature
What is the equation dealing with heat in phase changes?
Q = m * L
What is the SI unit of frequency, and what is it expanded into base units?
Hertz (Hz), inverse seconds
If you press on a valve with area A with force F connecting to a pipe and valve with area 1/4A, what force will be exerted on the other valve?
1/4 F
You drop an object into a tube of water with a surface area of 0.5 square meters, causing the water level to rise 0.3 meters. What is the buoyant force acting on the object?
Fb = 1470 N
If a beam of an unknown material, 301 meters at a temperature of 28 degrees Celsius, shrinks to 300 meters at a temperature of -15 degrees Celsius, what is the coefficient of Linear Thermal Expansion of the material?
[alpha] = 7.73 * 10-5 inverse Celsius
i do not like heat transfer problems they are long and annoying. write one instead of solving one
yay
What are the standard units of angular displacement, and where do they come from?
Degrees- ancient history
Radians- ratio of radius to circumference of a circle