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Gravity
Terms in this set (79)
Linear motion equations
Average velocity
Gravitational force
Static friction
Friction when a force is applied to an object but the object does not move. Always greater than kinetic friction for a given object.
Kinetic friction
Friction when a force is applied to a moving object.
Average acceleration
Centripetal force
Torque
Gravitational potential energy
Elastic potential energy
Total mechanical energy
Conservation of mechanical energy
KE₁ + PE₁ = KE₂ + PE₂
Work
W = Fdcosθ
Isochoric (isovolumetric)
A process in which volume stays constant as pressure changes (W = 0)
Isobaric
A process in which pressure stays constant as volume changes.
Power
The rate at which energy is transferred from one system to another
P = W/t = ΔE/t
Work-energy theorem
Mechanical advantage
The ratio of magnitudes of the force exerted on an object by a simple machine to the force actually applied on the simple machine:
MA = F(out) / F(in)
Efficiency
The amount of useful work generated by a machine for a given amount of work put into the system:
E = W(out)/W(in)
Thermal expansion of solids
ΔL = αLΔT
Thermal expansion of liquids
ΔV = βVΔT
State functions
Thermodynamic properties that are a function of only the current equilibrium state of a system, such as:
P, T, V, H, G, S
Not measured by an integral
First Law of Thermodynamics
ΔU = Q - W
Specific heat
q = mcΔT
Isothermal process
A process that occurs at constant temperature (ΔU = 0)
Adiabatic
A process in which no heat exchange occurs (Q = 0)
Change in entropy
Specific gravity
Pressure
P = F/A
Absolute (hydrostatic) pressure
Gauge pressure
Pgauge = P - Patm
Pascal's principle
Buoyant force
Poiseuille's Law
Critical speed
Continuity equation
Bernoulli's equation
Current
I = ΔQ/Δt
Resistance
Ohm's Law
Power (circuit)
Capacitance
Parallel plate capacitance
Parallel plate electric field
Capacitor potential energy
Dielectric capacitance
Coulomb's law
Electric field
Electrical potential energy
Electrical potential (voltage, electromotive force)
ΔV = U/q = kQ/r
Magnetic field (circular wire)
Magnetic field (straight wire)
Magnetic force
Magnetic force (current-carrying wire)
Electric dipole moment
Wave propagation speed
Wave period
Doppler effect equation
Sound level
Relative sound level
Intensity
I = P/A
Proportional to 1/r^2 (distance) and Amplitude^2
Standing wave (string/open pipe)
Standing wave (closed pipe)
Magnification
Snell's Law
Real lens
1/f = (n - 1) (1/r1 - 1/r2)
Index of refraction
Lens equation
Lens power
Double-slit equation
Energy of a photon
Photoelectric effect
Mass defect
Where m is the difference in masses between the atomic mass and the sum the masses of the nucleons.
Exponential decay
Newton's First Law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Newton's Second Law
A non-zero net-force causes an object to accelerate in the direction of that force (F=ma)
Newton's Third Law
F (A on B) = -F (B on A)
Center of mass
Total internal reflection
Light will be completely reflected if the angle of incidence is greater than the critical angle and light is traveling from a more dense medium to a less dense medium.
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