MCAT Chemical and Physical Foundations || with 100%
Verified Solutions.
Average velocity correct answers v=Δx/Δt
unit: m/s
Acceleration correct answers a=Δv/Δt
unit: m/s^2
Linear motion correct answers vf=vi+at
Δx=vit+1/2at^2
vf^2=vi^2+2aΔx
Projectile Motion correct answers Vertical component of velocity vsinθ
Horizontal component of velocity vcosθ
Static friction correct answers The force that must be overcome to set an object into motion
Fs ≤ μs η
Kinetic Friction correct answers Opposes the motion of objects moving relative to each other
Ff = μFN
Work correct answers W=F*d*cosθ
F is the force applied, d is the distance over which the force is applied, and θ is the angle
between the force applied and the direction of the object's movement
unit: joule=N*m
Power correct answers Rate at which work is performed
P=W/Δt
P=ΔE/t
Function of work over time
unit: watt= J*s
Kinetic Energy correct answers The energy associated with moving objects
K=1/2mv^2
Potential Energy correct answers Energy associated with a body's position
usually represented as U
Gravitational Potential Energy correct answers U=mgh
Work Energy Theorem correct answers W=ΔE
Conservation of Energy correct answers ΔE=ΔK+ΔU=0
,Newton's First Law correct answers A body in a state of motion or at rest will remain in that state
unless acted upon by a net force
Newton's Second Law correct answers F=ma
unit: newton= kg*m/s^2
Newton's Third Law correct answers Fb=-Fa
If body a exerts a force on bode b, then body b will exert a force back on a that is equal in
magnitude but opposite in direction
Newton's Law of Gravitation correct answers F=Gm1m2/r^2
Conduction correct answers Direct transfer of energy via molecular collisions
Convection correct answers Transfer of heat by the physical motion of fluid
Radiation correct answers Transfer of energy by electromagnetic waves
Specific Heat correct answers Q=mcΔt
can only be used when Q does not change states
Q>0 heat is gained
Q<0 heat is lost
First Law of Thermodynamics correct answers ΔU=Q-W
Adiabatic process: ΔU=-W, Q=0
Constant volume= ΔU=Q, W=0
Isothermal= Q=W, ΔU=0
Second Law of Thermodynamics correct answers In any thermodynamic process that moves
from one state of equilibrium to another, the entropy of the system and environment together will
either increase or remain unchanged
Density correct answers ρ=m/V
unit: kg/m^3
, Specific gravity correct answers ρsubstance/ ρwater
Weight correct answers ρgV
Pressure correct answers P=F/A
Force per unit area
unity: pascal=N/m^2
Absolute pressure correct answers In a fluid due to gravity somewhere below the surface
P=Po+pgz
Poiseuille's Law correct answers To calculate flow
Flow = ΔPπrLη
ΔP is the pressure difference across the pipe, r is the radius of the pipe, L is the length of the
pipe, and η is the viscosity of the fluid in the pipe.
Archimede's Principle correct answers Fbuoy=ρfluid*gVsubmerged
Buoyant force is equal to the weight of the displaced fluid
PV Work correct answers For fluid systems
W = PΔV
Pascal's Principle correct answers P=F1/A1=F2/A2
and A1d1=A2d2
so W=F1d1=F2d2
Coulomb's Law correct answers F=kq1q2/r^2
unit: newton
Electric Field correct answers E=Fe/q=kQ/r^2
units: N/C or V/m
a positive point charge will more in the same direction as the electric field vector, a negative
charge will move in the opposite direction
Electric potential energy correct answers U=qΔV=qEd=kQq/r
unit: Joules
Electrical Potential correct answers V=U/q
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