WAVES (PART 3) Flashcards
1
Q
- What are waves a sequence of?
A
- they are a sequence of simple harmonic oscillators
- each oscillator has the same amplitude and frequency
2
Q
- Where is Potential Energy stored?
A
- it is stored in a mass- spring oscillator
3
Q
- What can waves transfer?
A
- information
- energy
(this transfer can damage our ears)
4
Q
- What is the formula to calculate Potential energy?
A
PE = ½ . k . A²
PE = Elastic Potential Energy
A = the amplitude of the oscillation of the mass-spring
system
5
Q
- What is the energy that is transmitted by a wave proportional to?
A
- it is proportional to the square of the amplitude of that
wave
6
Q
- What are two quantities that are related to energy?
A
- power
- intensity
7
Q
- What is power a measure of?
A
- power is a measure of how much energy is transmitted
per unit time
8
Q
- What is intensity a measure of?
A
- it is a measure of how much power is present per unit
area
9
Q
- What is the calculation that connects intensity and power?
A
I = P / A
I = intensity in W/m²
P = power in Watts (W)
A = area in metres squared
10
Q
- Answer this question?
A
B
11
Q
- Answer this question?
A
B
12
Q
- Answer this question?
A
B
13
Q
- Answer this question?
A
- False
14
Q
- Answer this question?
A
- B
15
Q
- Answer this question?
A
- B
16
Q
- Answer this question?
A
- A
17
Q
- Read through Summary 1.
Does everything make sense?
A
- yes
18
Q
- Read through Summary 2.
Does everything make sense?
A
- yes
19
Q
- Read through Summary 3.
Does everything make sense?
A
- yes
20
Q
- Read through Summary 4.
Does everything make sense?
A
- yes
21
Q
- Read through Summary 5.
Does everything make sense?
A
- yes
