Physics

Question 1

Wavelength of fixed end standing wave

Answer 1

λ=2/n L(ength)

Question 2

Wavelength of first harmonic free end standing wave

Answer 2

λ=4L (draw it out)

Question 3

Wavelength of free end standing wave

Answer 3

λ=4/n L

Question 4

P = ΔE/Δt

Answer 4

Power

Question 5

Δp=FnetΔt

Answer 5

Impulse

Question 6

nx = c/vx

Answer 6

Refractive Index

Question 7

Q=mcΔT

Answer 7

Specific Heat Capacity

Question 8

sinθc = n2/n1

Answer 8

Total Internal Reflection

Question 9

F=qE

Answer 9

Force on a particle

Question 10

P=VI

Answer 10

Power (Watts)

Question 11

Speed of Light Through Refraction

Answer 11

n1v1=n2v2

Question 12

Q/t = kAΔT/d

Answer 12

Heat Transfer/Thermal Conductivity

Question 13

Latent Heat Energy

Answer 13

L = Q/M

Question 14

Fixed end standing wave harmonic order

Answer 14

1st harmonic
2nd harmonic, 1st overtone
3rd harmonic, 2nd overtone

Question 15

Free end standing wave harmonic order

Answer 15

1st harmonic
3rd harmonic, 1st overtone
5th harmonic, 2nd overtone

Question 16

What does n represent in λ=2/n and λ=4/n?

Answer 16

N is the harmonic number

Question 17

Where are the nodes and antinodes of a standing wave?

Answer 17

Antinodes at crests and node where wave is stationary.

Question 18

Difference between progressive and standing waves?

Answer 18

Progressive waves propagate in a direction. Standing waves are caused by superposition of two or more progressive waves of the same frequency and do not propagate in any direction, hence they “stand”

Question 19

Inverse square law (calculating intensity)

Answer 19

I=P/4πR^2

Question 20

Inverse square law (intensity at two points)

Answer 20

I1 R1^2 = I2 R2^2

Question 21

Concave lens

Answer 21

Disperses light

Question 22

Hooke’s Law (Spring force)

Answer 22

F=kx
k is spring constant
x is spring extension in m

Question 23

Potential Islamic Energy

Answer 23

Uₚ=1/2kΔx^2
k = spring constant
x = spring extension
U = potential energy