Flashcards in Wave Motion Deck (19):

1

## What the the two types of waves ?

### Transverse waves and longitudinal waves

2

## What an you say about transverse waves ?

### Transverse wave is the one in which the oscillations of y are perpendicular to wave velocity. Electromagnetic waves are transverse in nature.

3

## What can you say about longitudinal waves ?

### A longitudinal wave is the one in which oscillations o u are parallel to the wave velocity. Sound Waves are longitudinal in nature.

4

## What is the general eq of wave motion ?

### y=f(ax±bt)

5

## What is the formula of wave speed ?

### Wave speed v = coefficient of t/ coefficient of x= b/a

6

## What is the formula of angular frequency ω?

###
T= 2π/ω

ω=2πf

f=1/T =ω/2π

7

## What is the formula of wave number k?

###
Wave number k= 2π/λ

where λ=wave length.

8

## What is the formula of wave speed ?

### Wave speed v = ω/k= fλ

9

## What is the phase difference of one particle at a time interval ?

###
Δδ=ω(t1~t2)

Δδ=2π/T * ΔT

10

## What is the phase difference at one time between two particles at a path difference of delta x?

### Δδ= 2π/λ . Δx

11

## What is the formula of energy density u?

### Energy density u= 1/2pω²Α²= energy of oscillations per unit volume

12

## What is the formula of power P of wave motion?

### Power P = 1/2pω²Α²Sv= energy transferred per unit time

13

## What is the formula of intensity in wave motion ?

### Intensity I= 1/2pω²Α² v= energy transferred per unit time per unit area

14

## What is the phase difference of longitudinal wave ?

### π/2

15

## What is the speed of transverse wave on a stretched wire v?

###
v =

√T/μ=√T/pS

16

## What is the speed v of longitudinal wave ?

### v = (E/p)^1/2

17

## What is the Young's modulus of elasticity in solids?

###
In solids , E=Y= Young's modulus of elasticity

v= (Y/p)^1/2

18

## What is the adiabatic bulk modulus of elasticity according to Laplace correction ?

###
v=

√γRT/M

19