Physics Flashcards
What is heat
Vibration of Molecules
What is the formula of Mass, Weight, and Gravity
Weight / Mass * Gravity
What is the formula of Density, Weight, and Volume
Weight / Density * Volume
What is the formula for Specific Gravity
Density of Substance / Density of Water
What is the formula for potential energy
PE / weight * height
What is the formula for Kinetic Energy
1/2 mass * velocity^2
What is the formula for Work, Force, Distance
Work / Force * Distance
What is the formula for Power, Work, Time
Power / Work * Time
What is the effects of large gear to small gear
Increased Speed, Decreased Torque
What are the six times of simple machines
Lever, Pulley, Wheel and Axle, Inclined Plane, Screw, and Gear
Machine Defined
multiply force or to multiply speed
What are the two types of mechanical advantage and what are there formulas
Mechanical Advantage (Force) = Force In / Force Out
Mechanical Advantage (Distance) = Distance In / Distance Out
How is Weight dispersed through a pulley and what is the Mechanical Advantage of a pulley is based on?
Weight is proportionally dispersed through out the ropes,
Ratio of input rope to output ropes
What is force in and force out of a lever
Resistance is force in and effort is force out
What is the lever formula
Effort * Effort Arm = Resistance * Resistance arm
Large gear and Small Gear speed and torque force
High Torque/Slow and
Fast/Low Torque
What direction does a driven gear turn from a drive gear
Opposite of the drive gear
What is an idler gear
Gear put in between two gears to make the driven gear spin in the same direction as drive gear
What are mechanical advantage formulas for speed and force gears
Speed MA = Driven / Drive
Force MA = Drive / Driven
What is the formula for Incline Planes
Effort * Effort Length = Resistance * Resistance Arm
Pressure Defined
Amount of force acting on a specific amount of surface area
PSI defined
Pounds Per Square Inch
What is the flow of pressure
High Pressure always chases low pressure
Ambient Pressure Defined
Pressure in a certain area
What is one defining characteristic of Fluid Pressure
Fluid is not compressible
Pascal’s Law Defined and Formula
How Pressure acts on a fluid and how the fluids force acts on surrounding objects
Force (lbs) = Area^2 * Pressure (in^2)
Flow of Pressure formula
Volume of Moved input * Distance moved = Output of Volume moved * Distance moved
What is characteristics of High Pressure and Low pressure
High Pressure air = Rises, Low Density, Low Velocity, High Temperature
Low Pressure air = Falls, High Density, High Velocity, Low Temperature
What are the Five Mechanical Stresses
Tension, Compression, Torsion, Bending, and Shear
What happens to pressure if volume is constant and temperature goes up and why
Pressure Increases
Increase in temperature increases vibration of particles as particles are vibrated and hit each other more the energy is transferred between other particles
What is Gas laws formula
Volume one * Pressure one = Volume two * Pressure two
What is Charles Law
All gases expand and contract in direct proportion to the change in the absolute temperature
What is Charles Laws formula for when volume is constant and volume is different
Pressure one * Temperature two = Pressure two * Temperature one
Volume one * Absolute Temperature one = Volume two * Absolute temperature one
What is the combined formula for Charles law and Boyle’s law
(Pressure one * Volume one) / Temperature one =
(Pressure two * Volume two) / Temperature two
What is the pressure of mixed gases
The pressure of mixed gases is summed
What is Absolute Pressure
pressure adjusted for atmospheric pressure
What unit does absolute temperature use
Rankine
Is water vapor denser or less dense then air
Water vapor is less dense then air,
What is Absolute Humidity
Actual Water vapor in mixture of air and water
What is Relative Humidity
Ratio of the amount of water vapor actually present in the atmosphere to the amount that would be present if the air were saturated
What is Dewpoint
Temperature at which humid air must be cooled to condense
What is Vapor Pressure
Portion of atmospheric pressure that is exerted by the moisture in the air
