Bookmark Flashcards
Static fluid pressure vs absolute/hydrostatic pressure vs gauge pressure vs incident/ambient pressure
P=rhogh vs P = P0 + rhogh, total pressure exerted on object submerged in fluid, absolute pressure depends on density of fluid and not object’s vs Pgauge = P-Patm, diff b/w absolute pressure inside and atm pressure outside (ex: diff b/w absolute pressure inside tires and atm pressure on tires), gauge pressure depends on density of fluid and not object’s vs pressure at the surface (I guess you can assume pressure @ surface = atmospheric pressure unless otherwise)
Hooke’s Law. How to find freq of spring
F = -kx FOR SPRINGS; Higher k —> stiffer spring f = 1/2pi(sqrt(k/m)) where m is molar mass, k is spring constant
Most NEG change in enthalpy and entropy means?
Least change
What’s magnetic flux? What happens if there’s a change in magnetic flux? What happens if mag field inc/dec in loop?
How much a mag field moved thru a given area. Change in this gives you induced current
Inc thru loop —> current goes clockwise
Dec thru loop —> current goes counterclockwise
x and y vel for projectile motion
x: vox = vx throughout, ax = 0, x displacement = vox*t
y: reg kinematic eqns, ay = -9.8 m/s^2; vy = 0 at the top of the curve
1 LITER = 1 KG, 1 mL = 1 G
1 LITER = 1 KG, 1 mL = 1 G
Lensmaker eqn for thick/real lenses
1/f = (n-1)(1/r1 - 1/r2)
n=refraction index
r1=radius of curvature for first lens, r2=radius of curvature for second lens
Know how to find viscous force
Fv = eta*A*(v/d) d = depth of fluid, v = vel of fluid, A = area of surface in contact w/ fluid
Formula for uniform electric field in capacitor. How to find force of electric field
E = V/d, direction of electric field = always from pos plate to neg plate; electric field = caused by 2 oppositely charged plates F = qE
How to find impulse
J = deltap (change in momentum) or F*deltat where F = force and deltat = change in time; vector
How is Q (flow rate) in a closed system?
constant in closed system; indep in changes in cross sectional area
Visible light range
400-700nm
What did Young’s slit expt show about light? What did photoelectric effect show about light?
it acts like a wave; acts like both wave and particle
no simple machine vs frictionless inclined plane vs frictionless pulley
F = mg, W = mg vs F = mg/2, W = mgh vs F = mg/4, W = mgh
True or false: diverging lens ALWAYS give virtual img
T
How to determine radius of circle ionized particles will travel in mag field?
dependent on m/z (mass to charge) ratio
Dont’ forget the quarks = also a subatomic particle
So subatomic particles consist of p+, e-, n0 and quarks
What type of particles are deflected by mag fields?
moving charged particles (so photons aren’t affected by mag fields b/c they’re not charged)
Formula to find intensity
I = power/area; I = amp^2/r^2
Electric force in nuclear decay
repulsive force b/w p+ in nucleus
rotational transitions vs vibrational transitions vs electronic transitions vs photoionization
caused by absorption of microwaves, produces heat vs caused by absorption of IR waves, produces heat vs caused by absorption of vis light AND lower end of UV spectrum, product heat or release photons in visible range (fyi: H2O = transparent to vis light, so it doesn’t release photon in visible range) vs caused by absorption of higher end of UV spectrum, x-rays, or gamma rays
transverse waves vs longitudinal waves and their examples
perpendicular to propagation (ex: microwaves, radio waves, visible light, x-rays, basically EM waves cuz their oscillating electric and magnetic field vectors = perpendicular to propagation); ONLY TRANSVERSE WAVES HAVE POLARIZATION - a property of a wave when it can oscillate w/ more than one orientation vs parallel to propagation (ex: sound)
How to know pos vs neg torque
counterclockwise vs clockwise
How to find voltage using emf
V = Ecell - IRint, where Ecell = also emf and Rint = internal resistance
Kirchoff’s junction rule vs loop rule
Sum of currents vs voltage going in is the same going out (additive)
Current (I) formula. What’s the direction of current?
charge over time = Q/t, units: Amperes
Direction a pos charge would flow: high to low potential (ie. Based on flow of e- moving from low potential to high potential, so technically direction of current flows opposite to flow of e-); current by definition = moving charge in space, carries net charge
