Physics Uworld supplemental

average velocity

change in x over change in t

destructive interference occurs when a wave is

180 degrees out of phase

if the frequency of the first harmonic is x then the 2nd and third would be

2x, 3x

doppler equation for frequency

change in frequency/frequency = -velocity/c

(inverse between freq and velocity)

floating equation

mg=density fluid v submerged g

charge cannot accumulate indefinitely for a capacitor because

the 2 plates of the capacitor collect charges of the opposite sign (they will be repelled if more charge comes)

works done by seatbelt on crash dummy

change in KE or -1/2mv²

if the human body undergoes a shift in mass

the center of mass also shifts

interstitial

tissues, capillaries

decreasing blood osmotic pressure

causes it to go to interstitial

osmotic pressure travels

low to high osmotic

hydrostatic pressure travels

high to low hydrostatic

_____face the stress of hypertension

arteries

if density of the object is equal to density of the water and u push the object

itll accelerate at constant velocity

to convert Pa to mmHg

P=density times gh

volumetric flow rate (changes/doesnt change)

doesnt change

what does beta decay do to charge

nothing

point charge (use when they say point charge)

E=kQ/r²

Coulomb’s law when you need the force between 2 charges (force exerted on, charge A, net force)

F=(|KQQ|/r²)

single source (E field at point B)

E=k|q|/r²

visible light

400-665 nm

a voltmeter should have what kind of a resistance

high resistance

destructive interference

wavelength/2, 3wavelength/2….

myopia is corrected by

diverging lens

diverging lens produces

virtual and upright images

converging lens outside the focal point

real and inverted

converging lens inside the focal point

virtual and upright

if something gives percent increase

you have to ad that ro 100%

light travels the slowest

with higher index of refraction

relationship of E and A

E/A=E/A or E prop to A²

attenuation

dampening of amplitude

attenuation grater for

softer materials

intesnity

power/area, rate particles/time

speed of EM radiation only depends on

characteristics of medium which it travels through

if intensity decreases by 100

dB -20

sound is made by ___ waves and ____ creates vibrations

pressure, rapidly contracting and expanding

more thickness of lens causes

more refraction

to find where frequency shift=0

velocity has to equal zero

sound waves are (slower/faster) than light waves

slower