waves

Question 1

what is amplitude

Answer 1

distance from the equilibrium position to the point of maximum displacements

Question 2

longitudinal waves

Answer 2

there oscillations are parallel to energy transfer. particles vibrate parallel to the wave direction

Question 3

transverse waves

Answer 3

there oscillations are perpendicular to energy transfer. particles vibrating perpendicular to the wave direction

Question 4

what is the wave equation

Answer 4

v = y x f
wavespeed = wavelength x frequency

Question 5

what is time period

Answer 5

time it takes for one wavecycle

Question 6

phase

Answer 6

the phase of a wave is just a point on a wave

Question 7

what is the phase difference

Answer 7

the difference between two point on a wave in units of degrees or radions.

Question 8

example of a longitudinal wave

Answer 8

sound waves

Question 9

example of a transverse wave

Answer 9

EM spectrum

Question 10

what is the first step of the motion of particles on a wave

Answer 10

the particle moves upward perpendicular to the wave direction

Question 11

what are the 2 types of superstition

Answer 11

constructive and deconstructive

Question 12

what is the second step of the motion of particles on a wave

Answer 12

the particles moves through the equilibrium position

Question 13

what is superposition

Answer 13

superposition is where two or more waves combine together

Question 14

what is the third step of the motion of particles on a wave

Answer 14

it continues upward until it reaches the crest

Question 15

what happens in superposition in a constructive wave

Answer 15

amplitude increases

Question 16

what is the last step of the motion of particles on a wave

Answer 16

the particle then moves downward moving back through the equilibrium position and eventually reaches the trough

Question 17

what happens in superposition in deconstructive interference

Answer 17

amplitude decreases (extreme case = waves cancel each other out)

Question 18

what is polarisation

Answer 18

waves are polarised if they are vibrating parallel to eachother

Question 19

how can we polarise life

Answer 19

only the waves vibrating parallel to the slits get through

Question 20

what is the time period

Answer 20

time it takes for one wave cycle

Question 21

what is the time period equation

Answer 21

T = 1/f

Question 22

what is the node

Answer 22

point of zero displacement

Question 23

what do progessive waves do

Answer 23

move forward in space
transfer energy outwards
EM waves, sound waves

Question 24

waht is the antinode

Answer 24

point of maximum displacement

Question 25

what do stationary waves do

Answer 25

trapped between two points
energy is stored between the two points
musical instrument, vibration on bridges

Question 26

standing waves equation

Answer 26

wavelength = length of string/ number 9f waves

Question 27

what happens to stationary waves on a string

Answer 27

when a string is vibrated at certain frequencies, stationary waves can form. the different stationary waves that can form are called harmonics

Question 28

how many waves are in the EM spectrum

Answer 28

7

Question 29

what is the frequency, and what is it measured in

Answer 29

measured in Hz, and number of waves per second

Question 30

what is the two things on a longitudinal wave

Answer 30

rarefraction (spaced out part)
compression (packed part)

Question 31

what is pnmm bu kmg

Answer 31

pico, nano, micro, milli. Base unit. kilo, mega, giga

Question 32

what is time period measure in

Answer 32

seconds