1316962
Description
Mind Map by David Solís, updated more than 1 year ago
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Created by David Solís
over 9 years ago
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Mental Map Bueno
- Mechanics
- Momentum mv
- Law of conservation of momentum
- A momentum of an isolated system with no external forces applied on the system, will remain constant
- A momentum of an isolated system with no external forces applied on the system, will remain constant
- Law of conservation of momentum
- Impulse
- Change of momentum
- Change of momentum
- Vectors
- Work
- Work involves moving a moving a force through a distance
- Energy and work are scalar quantities
- Work involves moving a moving a force through a distance
- Energy
- Potential Energy
- m g h
- m g h
- Kinetic energy
- 1/2 m v^2
- 1/2 m v^2
- Conservation of energy
- inital PE = final KE
- PE= final KE + Q
- inital PE = final KE
- Power
- Rate at wihch energy is transformed
- J S^-1 = Watt
- Efficiency
- Is the ratio of useful power with respect of the power receive
- Eff =( Power out / Power In) * 100
- Is the ratio of useful power with respect of the power receive
- Rate at wihch energy is transformed
- Colliisions
- Elastic Collision = KE is conserved
- Inelastic Collision = KE is lost
- Elastic Collision = KE is conserved
- Potential Energy
- Hooke´s Law
- F x = 1/2 j x^2
- K = N m^-1
- F x = 1/2 j x^2
- Momentum mv
- Measurements
- Units
- Fundamental Units
- Mass Kg
- distance m
- Time s
- Temperature ºC
- Current A
- Light Intensity Cd
- Mass Kg
- Derived Units
- Force kg m s^-1
- Power Kg m S^-3
- Energy J
- Velocity ms^-1
- Acceleration ms^-2
- Pressure F/A
- Electric Charge C
- Resistance Ohm
- Force kg m s^-1
- Fundamental Units
- Uncertainties
- Absolute
- (1.57 ± 0.03)m
- (1.57 ± 0.03)m
- Relative
- 1.57m ± (0.03m/1.57m) = 1.57m ± 0.02
- 1.57m ± (0.03m/1.57m) = 1.57m ± 0.02
- Percentage
- : 1.57m ± (0.02 × 100%) = 1.57m ± 2%
- : 1.57m ± (0.02 × 100%) = 1.57m ± 2%
- Absolute
- Prefixes
- Yotta- (Y)
- Zeta- (Z)
- Exa- (E)
- Peta- (P)
- Tera- (T)
- Giga- (G)
- Mega- (M)
- kilo- (k)
- Hecto- (h)
- Hecto- (h)
- Deka- (da)
- deci- (d)
- centi- (c)
- milli- (m)
- micro- (μ)
- nano- (n)
- pico- (p)
- femto- (f)
- Yotta- (Y)
- Errors, Precision and
accuracy
- Types of error
- Random errors
- Changes in temperature, pressure, humidity.
- Different person reading the instrument
- Reaction time
- Malfunction of a piece of apparatus..
- Malfunction of a piece of apparatus.
- Changes in temperature, pressure, humidity.
- Systematic Errors
- Computational and mathematical deficiency.
- Incorrectly report raw data.
- Incorrect application of theory and equations.
- Computational and mathematical deficiency.
- Random errors
- Precision
- indicates that an instrument or method has the capacity to give the same reading of the measurement.
- indicates how near is the readings to the true value of the measurement.
- indicates that an instrument or method has the capacity to give the same reading of the measurement.
- Types of error
- Units
- Circuits
- Battery = Converts Chemicial PE into electric current
- Electric current = The amount of charges flowing per unit time
- Electric charge = positive & negative
- Electric potential differene = work done to move a charge from one point to another point per unit charge.
- Electron volt = Energy needed to move one electron through a p.d. of 1 v.
- Resistivity= property of the material. The ability to oppose to flow of current
- Resistance property of an object, the ability of an ojbect to oppose to the flow of current.
- Conductors are where e free to move.
- Resistance
- Ohms law= the electric current through an ohmic conductor is directly
proportional to the p.d. across the conductor remaining the temperature
and other physical quantities constant
- Resistance changes form conductor to conductor. Resistance increases
with temperatyr in Conductors.
- Ohms law= the electric current through an ohmic conductor is directly
proportional to the p.d. across the conductor remaining the temperature
and other physical quantities constant
- Energy & Power
- e.m.f. electro motive force. The chemical energy converted to electric energy per unit charge.
- Potential = The electric energy converted to the thermal energy per unit charge.
- Power delivered= the amount of chemical energy converted to electric energy per unit time
- Power dissipated amount of electric energy converted to thermal dissipated per unit time.
- e.m.f. electro motive force. The chemical energy converted to electric energy per unit charge.
- Parallel & Series cicuits
- Sensors
- Thermistor
- It is a semiconductor
- Temperature increases = resistance increases
- It is a semiconductor
- Strain Gauge
- Thermistor
- Battery = Converts Chemicial PE into electric current
- Thermal
- Heat= is the process by which energy is trasferred.
- Internal Energy: Is the KE and PE on the molecules of all the object.
- Thermal capacity= Is the amount of thermal energy Q needed to raise the temperature of a body by 1k.
- Q = C Tf-Ti
- Q = C Tf-Ti
- Especific Heat capacity : Is the amount of thermal energy Q needed to raise the temperature of 1 kg of a substance 1k.
- Q = m C Tf- Ti
- Q = m C Tf- Ti
- The temperature as measured on the thermodynamic scale is proportional to the average KE per partcile.
- Thermal mechanisms
- Convection
- Conduction
- Radiation
- Convection
- Specific latent heat = for any phase transformation (at constant temperature) is defined as the latent heat per unit mass.
- Q = m L
- Q = m L
- Pressure in a Gas
- Pressure is equal to the force over the unit area.
- P = F/ A
- If the force is greater there will be more collisions per unit time.
- Pressure is equal to the force over the unit area.
- Heat= is the process by which energy is trasferred.
- Waves
- Oscillation
- Any vibration that goes back and forward
- Any vibration that goes back and forward
- Cycle= is one oscillation
- eEquilibrium position = Where the system or object
tends to be.
- Time period = The time needed for one cycle.
- Frequency= number of cycles per unit time
- Simple Harmonic Motion
- The acceleration is directly proportional to the equilibrium point.
- The acceleration is directed always to the equilibrium point.
- Formula ( Beginning from the maximum positive point)
- X= Xo * cos (W *t)
- v = - W* Xo * sin (Wt)
- a = -W^2 * x
- X= Xo * cos (W *t)
- Vo = W * Vo
- Energy formulas
- KE = 1/2 * m* W^2 (Xo^2-X^2)
- PE = 1/2 m * W^2 * X^2
- KE = 1/2 * m* W^2 (Xo^2-X^2)
- The acceleration is directly proportional to the equilibrium point.
- Damping
- Light damping = Amplitude changes
- Over Damping = Ampliitude changes drastically
- Critical Damping = It does not passes from one oscillation
- Light damping = Amplitude changes
- Forced oscillation and resonance
- Natural Frequency
- Forced oscillation
- Resonance
- Waves
- Is a disturbance that spreads out or propagates throw a medium
- Pulse wave
- Continuous wave
- longitudinal wave
- Transversal wave
- The displacement is perpendicular to the direction of the propagation of the energy.
- Water waves, light ( electromagnetic), earthquakes
- The displacement is perpendicular to the direction of the propagation of the energy.
- Longitudinal wave
- Direction od the discplacement of the medium os the same at the direction of the propagation of the energy.
- Spring, sound, earthquakes
- Direction od the discplacement of the medium os the same at the direction of the propagation of the energy.
- Characteristics
- Amplitude
- Period time
- Wave
- Frequency
- Wavelength
- Amplitude
- Properties
- Reflection
- Refraction
- Difraction
- Polarization
- Interference
- Reflection
- Is a disturbance that spreads out or propagates throw a medium
- Natural Frequency
- Oscillation
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