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Important Physics Formulas for MCAT
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Gravity
Physics formulas vital to have memorized for MCAT examination. These are taken from "ExamKrackers" MCAT Physics review.
Terms in this set (71)
This equation can describe velocity or speed. When d represents distance, the equation describes speed. When d represents displacement, v is equal to velocity.
This equation describes acceleration, which is the change in velocity, or displacement/ unit time, per unit time. SI units are in m/s^2
This equation requires constant acceleration to hold true. x is displacement, v is velocity, t is time, and a is the acceleration.
This equation requires constant acceleration to hold true. v is velocity, a is acceleration, and t is time.
This equation requires constant acceleration to hold true. v is velocity, a is acceleration, x is displacement.
This equation requires constant acceleration to hold true. v(avg) is average velocity, v(o) is original velocity, v is current velocity.
This equation requires constant acceleration to hold true. v is velocity, g is gravitational acceleration (9.8m/s/s) and h is height fallen.
This equation describes an object moving in a circle at a constant speed v which experiences a centripetal acceleration a(c) that is proportional to the square of its speed and inversely proportional to the radius of the circle which is circumscribes.
This equation describes the centripetal force applied to an object to give it a certain centripetal acceleration.
This equation describes the force due to gravity on two objects of masses m(1) and m(2) at a distance r. G is the gravitational constant.
This equation is Hooke's law, which describes the force generated when an object is deformed. k is the spring constant unique to the specific object, and x is the displacement from the rest position.
This equation describes the force which acts on an object directly down the plane of an inclined plane when gravity is the only force on that object.
This equation describes the normal force which acts on an object on an inclined plane when gravity is the only force on that object.
This equation describes the force on an object due to kinetic friction. Note, in order for friction to kinetic, both plane of the objects MUST be SLIDING past each other. This means cars tires do NOT experience kinetic friction.
This equation describes static friction acting between two objects which are stationary due to each other. This force must be overcome to slide the objects past each other.
This is Newton's second law, stating that the Force (net force) on an object is proportional to is mass and acceleration.
This equation describes power. P is power, E is energy, and t is time.
This equation describes power. P is power, F is force, v is velocity, and theta is the angle between F and v.
This equation describes elastic potential energy. k is the spring constant, x is displacement.
This equation describes gravitational potential energy. m is mass, g is gravitational acceleration, and h is height.
This equation describes kinetic energy.
This equation describe torque. Tau is torque, F is the force, and l is the lever arm (direction of force perpendicular to the axis of rotation.
This equation describes work. F is force, d is distance, and theta is the angle between the force and displacement.
This equation describes total work when no heat is gained or lost. K is kinetic energy, U is potential energy, and E(i) is internal energy.
This equation describes impulse.
This equation describes momentum
This equation describes rest mass energy.
This equation describes fluid density. Rho is density, m is mass, and V is volume. Unit are usually Kg/m^3.
This equation describes pressure due to a liquid at rest. P is pressure, F is force, and A is area.
This equation describes the S.G. of a fluid. The S.G of water is 1. Fluids with higher S.G than 1 are more dense than water.
This equation describes pressure due to a colummn of fluid at rest. P is pressure, rho is density, g is the gravitational constant, and y is the height of the column.
This equation describe the buoyant force on an object immersed in a fluid.Rho is the density of the fluid, V is the volume of fluid displaced by object, and g is gravitational acceleration.
This equation describes volume flow rate. Q is rate, A is area, v is velocity of the fluid.
Thisis bernoullis equation. K is a constant, P is pressure, rho is density, v is velocity, g is gravitational acceleration, and h is height.
This equation describes the velocity of a steam of water coming from a spigot at a height h below an open container of water. v is velocity, g is gravitational acceleration, and h is the height difference. Note for this equation to hold true, the spigot and container must be exposed to the same external pressure (atm)
Modulus of elasticity
This equation describes decibel levels.
This equation describes resonant frequency for a pipe open or closed at both ends, or a string with both ends tieddown
This equation describes beat frequency
This equation describes resonant frequency for a string tied at one end of a pipe open at one end
The doppler effect
The doppler effect
Velocity of electromagnetic radiation (c = 3 x 10^8)
Period of a wave
This equation describes the maximum voltage of an AC current. V(rms) is the root mean square voltage (120 in AC outlets)
This equation describes the maximum current of an AC circuit. I(rms) is the root mean square voltage.
This equation describes capacitance. C is capacitance in farads, Q is charge on the plates, V is voltage between the plates.
This equation describes potential energy of a capacitor
This equation describes potential energy of a capacitor
This equation describes potential energy of a capacitor
This equation describes the force on a charge q due to an electric field E
This equation describes the potential energy of a point charge in an electric field due to an electric force times displacement of the charge (arbitrary, similar to gravitational pot energy)
Voltage. E field strength times distance
Potential energy. Voltage times charge
Force due to two point charges with charge q1 and q2 and distance between them r
Potential energy due to two point charges
Electric field due to a point charge
Electric field due to a point charge
Magnetism. q = charge, v = velocity , B= mag field strength, theta = angle between v and B
Voltage = current times resistance
Power = current times voltage
Power = current squared times resistance
Power = voltage squared divided by resistance
This equation relates the speed of electromagnetic radiation, c, to its frequency and wavelength
This is the relative speed of light in a medium. C is speed of light in a vacuum.
This equation describes the energy of a photon.
This equation describes the refraction of a light wave when passing between two medium of different indices of refraction. Note, a higher index of refraction results in a lower speed in that medium.
Equation relating focal point of mirror to center of curvature.
The thin lens equation.
Lens power. (focal point)
Magnification
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