Physics 2 Flashcards
What’s is the equation for Moment of inertia
Product of mass x distance from axis
What is the angular momentum
Radius x the linear motion
Or
Inertia x distance from axis
Equation for angular momentum
Rotational inertia x angular velocity
How could you increase the ridigty of a gyroscope
Making making rotation faster
Increasing the mass
Increasing the distance of mass form the axis
What is prescient in gyroscopes
This is the reaction to a force applied to the axis of a rotating assembly causing it to tilt or turn
What’s is the equation for work done
Force x distance
What is Radiant energy
It is a type of energy that travels by waves or particles
What is thermal energy
It is heat or warmth and travels through waves and particles
What is sound energy
It’s vibration in air and particles that we can hear through our eardrums
What is l electrical energy
It’s the flow of negative electrons around a circuit
What is mechanical energy
It is physical movements such as a tennis ball
What is power
Work done divided by time or energy divide by time
What is normal reaction
It is a force that acts in the oposite to weight like 2 kg on a table the normal will react with 2kg of force
What is kinetic friction
It is generated when one surface slides over another
What is the equation for the co efficacy of friction
Friction force divide by the normal reaction
What is metallic friction
It is comprised of adhesion and displacement
How does rolling friction effect an object
Friction is reduced when rolled on objects compared to sliding
Equation of specific gravity
Density of object divide density of water
What is fluid flow measured in
Cubic meters per second
What is the equation for flow rate
Velocity x the cross sectional area
How does lift on an aicraft work
High pressure lo velocity air on the botttom
Low pressure high velocity air on the top
What is specific heat capacity
It is the amount of heat required to raise 1 gram of material by 1 degrees
What is the latent heat equation
Mass x specific heat
What is conduction
It’s energy passed form particle to particle
What is convection currents
It’s rising hot currents and it cools and falls kind of looks like a volcano
What is the co efficnat of linear exspansion
Change in length divide by original length x change in temperature
Entropy
Is the amount of energy lost during an exchange of energy like ice melting
What is impulse
The change in momentum
Mass x velocity 1 - mass x velocity 2
