MCAS Flashcards
What is Newton’s first law?
Objects in motion stay moving in a straight line unless acted upon by an outside force, and objects at rest stay at rest unless acted upon by an outside force
What is Newton’s second law?
Net force = mass x acceleration
What is Newton’s third law?
For every action, there is am equal and opposite reaction
What is thermal energy a measure of?
The movement of particles
What Is impluse?
Force x time.
What is impulse equal to?
Change in momentum, or mass(v2-v1).
What is simple harmonic motion?
Any kind of regular back and forth motion.
What is the equation for momentum?
P=mv
What is kinetic energy?
Energy due to motion
What is potential energy?
Stored energy
Elastic potential energy
When an object is stretched and returns to its original shape
Thermal energy
Random motion of molecules
What is the difference between thermal energy and sound energy?
Thermal is the random movement of molecules, sound is the orderly movement of molecules
Chemical energy
Energy stored in molecules
Electric energy
Movement of charged particles
What is the equation for thermal energy?
Average kinetic heat x number of molecules.
What is thermal energy affected by?
Mass, temperature
What is internal energy?
The sum of all energies acting on an object
What is internal energy affected by?
Temperature, mass, specific heat
What is charge by friction?
When two insulators rub one another, and used up equal but opposite
What is charge by induction?
When a conductor and an object are close to one another, and the conductor becomes equal and opposite of the object
What is charge by conduction?
When two conductors share a charge and end up equal
Name the parts of a lightbulb
- Filament
- Side contact
- Bottom contact
- Separator
Series circuit:
- Current is the same everywhere
- Voltage is different, depends on the resistance
- Resistance is simply added up
- Current goes through small resistance first
Parallel circuit:
- Current is different
- Voltage is the same
- Resistance is 1/r1+1r2
- Current goes everywhere evenly
What is the trick to remember what is the same in which circuit?
Current = I
SerIes
So, voltage must be the same in parallel
In a circuit, what does a switch do?
It adds a break to the circuit, stopping any current from flowing
How to draw the grid
VIR vertically
TR1R2 horizontally
What does ohms law state?
That voltage=IR, or current x resistance
What type of wave is sound?
Longitudinal, and mechanical
What type of wave is light?
Electromagnetic and transverse
