Flashcards in notes Deck (27):

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## evaporation:

### occurs at the surface of a liquid when it gets enough energy and becomes a gas. rate depends o f the temp. atmospheric pressure, and surface area of a liquid. while evaporating, molecules cool: hot molecules with high energy leave

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## heat:

### transfer of energy(Joules)

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## ideal gasses:

###
all collisions are perfectly elastic

no intermolecular forces

all molecules are identical

all molecules are spherical

volume of molecules are very small compaed to container

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## newtons law of cooling:

### the rate of heat transferred depends on the difference in temp between two bodies

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## fluorescence

### electrons are excited to high energy level and omit light as they relax

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## frequency

### the number of cylces per time *Period is inversly proportional to frequency

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## angular frequency:

### w= 2PIEF or W= 2 pie/ T (Period)

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## resonance:

### increase in amplitude due to input of energy at the frequency of oscillation or integer multiple

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## refraction:

### bending of a wave when changing medium

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## critical angle:

### Øc= sin^-1 (n2/n1)

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## standing waves:

###
two waves of equal frequency traveling in opposite directions in phase

(standing waves do not transfer energy)

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## rayleigh criterion

### Ø= wavelength/ slit width

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## polarization:

### a wave where the disturbances in the medium occurs in one plane

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## brewters angle

###
angle of incoming light where max polarization occurs

n = tanø

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## blackbody radiation

### EM radiation due to accelerating charges

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## inverse square law

### F

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## Change in temp is inversely proportional to....

### Mass

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## momentum:

### mass times velocity (Vector)

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## force

### rate of change of momentum

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## impulse

### change in momentum

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## units of work

### joules

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## pressure

### force per area

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## unit of power

### watt

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## q= mc

### J Kg-1 K-1

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## kelvin

### 273 + celcius

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## water freezes

### 0 degrees celcius

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