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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

binding energy of a nucleus

the energy required to separate all the nucleons in a nucleus