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Question 1

Static fluid pressure vs absolute/hydrostatic pressure vs gauge pressure vs incident/ambient pressure

Answer 1

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)

Question 2

Hooke’s Law. How to find freq of spring

Answer 2

F = -kx FOR SPRINGS; Higher k —> stiffer spring
f = 1/2pi(sqrt(k/m)) where m is molar mass, k is spring constant

Question 3

Most NEG change in enthalpy and entropy means?

Answer 3

Least change

Question 4

What’s magnetic flux? What happens if there’s a change in magnetic flux? What happens if mag field inc/dec in loop?

Answer 4

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

Question 5

x and y vel for projectile motion

Answer 5

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

Question 6

1 LITER = 1 KG, 1 mL = 1 G

Answer 6

1 LITER = 1 KG, 1 mL = 1 G

Question 7

Lensmaker eqn for thick/real lenses

Answer 7

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

Question 8

Know how to find viscous force

Answer 8

Fv = eta*A*(v/d)
d = depth of fluid, v = vel of fluid, A = area of surface in contact w/ fluid

Question 9

Formula for uniform electric field in capacitor. How to find force of electric field

Answer 9

E = V/d, direction of electric field = always from pos plate to neg plate; electric field = caused by 2 oppositely charged plates
F = qE

Question 10

How to find impulse

Answer 10

J = deltap (change in momentum) or F*deltat where F = force and deltat = change in time; vector

Question 11

How is Q (flow rate) in a closed system?

Answer 11

constant in closed system; indep in changes in cross sectional area

Question 12

Visible light range

Answer 12

400-700nm

Question 13

What did Young’s slit expt show about light? What did photoelectric effect show about light?

Answer 13

it acts like a wave; acts like both wave and particle

Question 14

no simple machine vs frictionless inclined plane vs frictionless pulley

Answer 14

F = mg, W = mg vs F = mg/2, W = mgh vs F = mg/4, W = mgh

Question 15

True or false: diverging lens ALWAYS give virtual img

Answer 15

T

Question 16

How to determine radius of circle ionized particles will travel in mag field?

Answer 16

dependent on m/z (mass to charge) ratio

Question 17

Dont’ forget the quarks = also a subatomic particle

Answer 17

So subatomic particles consist of p+, e-, n0 and quarks

Question 18

What type of particles are deflected by mag fields?

Answer 18

moving charged particles (so photons aren’t affected by mag fields b/c they’re not charged)

Question 19

Formula to find intensity

Answer 19

I = power/area; I = amp^2/r^2

Question 20

Electric force in nuclear decay

Answer 20

repulsive force b/w p+ in nucleus

Question 21

rotational transitions vs vibrational transitions vs electronic transitions vs photoionization

Answer 21

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

Question 22

transverse waves vs longitudinal waves and their examples

Answer 22

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)

Question 23

How to know pos vs neg torque

Answer 23

counterclockwise vs clockwise

Question 24

How to find voltage using emf

Answer 24

V = Ecell - IRint, where Ecell = also emf and Rint = internal resistance

Question 25

Kirchoff’s junction rule vs loop rule

Answer 25

Sum of currents vs voltage going in is the same going out (additive)

Question 26

Current (I) formula. What’s the direction of current?

Answer 26

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