Physical Science Flashcards
heat capacity
amount of energy it takes to raise 1 degree K (depends on how amount of stuff we have)
polyprotic acid
acid containing more than one hydrogen ion
continuity equation
volume flow rate for an ideal fluid must be constant
v1A1=v2A2
narrowing of arteririal walls- reduced arterial pressure due to the increase in flow rate
Henderson Hasselbach equation
pH= pKa + log (conjugate base/acid)
right hand rule
thumb- direction of vector qv
curl- magnetic force
relate object distance o, image distance i, and focal length
1/0+ 1/I = 1/F
current increases
voltage decreases
solubility depends on…
temperature, polarity, addition of other solutes, pressure for gases in solution
torque
t= rF
buoyant force
F= density(g)(Vsubmerged)
ammeter
measures current
Ohm’s law
V=I/R
Kirchoff’s Law
the voltage drop across the two resistors added together must be euqal to the voltage supplied by the battery
i = e/(1+R)
good ammeter
low internal resistance so it dissipates very little enrgy
current
charge/time
flow of electric charge
incomressible fluid of negative charge
capacitance of a parallel plate capacitor
C= kE0 A/d
k= dielectric constant of the medium between plates E0= permittivity of free sspace A= area overlap between two plates d= separation of two plates
capacitance
Q= CV
power
P= W/t
work/ time
P= iV (current times voltage)
power released when current i passes through resistance R
P= i^2 R
sinusoidal current
I= Imaxsinwt
Resistance of a wire
R- resistivity(p)L/A
index of refraction
n=c/v
n= index of refraction in medium
converging lens
helps light converge more quickly? helps light focus on retina when its focusing behind the retina
converging lens
real if object is placed outside focal length
and inverted if it is a real image formed by converging lens
all items clearly viewed by eye are…
outside the focal length
image formed on retina
real, inverted, and reduced
increase in boiling point
decrease in vapor pressure
boiling point is proportional to …
molality of a solution
ethanol vs. water
ethanol is more volatile
Boiling point elevation equation
change in T = K(b)molality
For power to increase,
current must increase and total resistance of circuit must decreaese
electric field
E=V/d
force due to an electric field
F= neE
electrolytic cell
an external source of electrical power is used to induce a nonspontaeous reaction to occur
Values for index of refraction change as…
change as wavelength of light changes.
Young’s modulus
stress/strain
x, v, t
x= v(f)t+ (1/2)(a)(t^2)
rotational equilibrium
rFsin(theta)= r2F2sin2(theta)
Greatest vibration?
Point where waves from second and third fundamentals constructively interfere the most (closest to two overlapping antinodes)
