Flashcards in Review Vocab Deck (26):

0

## linear momentum:

### mass multiplied by velocity

1

## impulse

### a change in momentum

2

## explain whether momentum and impulse are scalar or vector quantities

### their both vecors, changing in direction and magnitude

3

## pressure:

###
force over internals energy(A)

P= F/A

4

## three assumptions made with ideal gas model

###
1. there is not intermolecular forcce acting on the molecules

2. molecules are much smaller in comparison to their container

3. all molecules are identical speares

5

## specific heat capactiy:

### the amount of energy required to raise 1 unit mass of a substance by 1 K.

6

## Boiling:

### inolves a transfer of thermal energy with no change in temp. is the point where water begins to reach the temperature at which it can begin to evaporate.

7

## evaporation:

### when the liquid loose KE to the gas. a thermal heat transfer.

8

## specific laten heat of fussion:

### the thermal energy required to melt a unnit mass of material at its melting point

9

## explain what is ment by the temperature of a substance:

### the measurment of the average kinetic energy of the molecules of a substance

10

##
internal energy:

### The average KE of molecules = their potential energy

11

## thermal energy:

### the averge KE of molecules, calculating the transfer of energy from each object

12

## simple harmonic motion

### accelertion is proportional and opposite the direction of displacement

13

## state two properties that are common to all electromagnetic waves:

###
1. all electromagnetic waves travel with the same speed in free space

2. wave lengths relate to the electromagnetic spectrum

14

## dipertion

### when a prisim splits light

15

## monochromatic:

### consiting of only one color.

16

## Coherent

### choherent light is light that is in phase

17

## define focal point:

### The point at which rays that are in parallel to the exis converge

18

## populated inversion

### most of the molecules are in an excited state rather than a ground state

19

## simple harmonic motion equation

### a= -W^2 X

20

## snells law... the relationship between theta and n (The refracted index)

###
sinø= n sinø (90-ø)

sinø= n cosø

n= tanø

21

## define electrical resistance:

### ratio of potential difference to current

22

## define electric field strength at a point

### force per unit exhorted on a positive test charge at a point

23

## explain why field lines can never touch or cross

### field lines give the direction of the force, if the lines touched a particle would move in two different directions, and that is not possible

24

## state newtons law of gravitation:

### the force between two points is proportional to the product of the masses, and inversely proportional to the square of their separation

25