physics final 2

Question 1

mechanical waves

Answer 1

Oscillation of matter that transfers energy through a medium.

Question 2

Electromagnetic Waves

Answer 2

waves created as a result of vibrations between an electric field and magnetic field (dont require medium)

Question 3

Transverse Waves

Answer 3

The waves are perpendicular to the direction of propagation

Question 4

Longitudinal/Compressional Waves

Answer 4

A wave that vibrates parallel to the direction of motion

Question 5

Absorption

Answer 5

incident light wave hits a material and the energy is converted to a new type (typically heat)

Question 6

Transmission

Answer 6

wave travels through a medium or into a new medium

Question 7

Reflection

Answer 7

occurs through a change of direction in the wave when it bounces off a barrier

Question 8

Refraction

Answer 8

the change of direction in a wave passing from one medium to another

Question 9

Diffraction

Answer 9

wave spreads out as a result of passing through the opening of an obstacle

Question 10

Scattering

Answer 10

Scattering occurs when there is a change in direction of motion due to a collision with another particle

Question 11

Constructive Interference

Answer 11

waves combine to form a wave bigger than either of the two original

Question 12

Destructive Interference

Answer 12

waves combine and cancel eachother out

Question 13

Series Circuit V, I

Answer 13

Voltage = different for each resistor
Current = same for all resistors

Question 14

Parallel Circuit V, I

Answer 14

Voltage = same for all resistors
Current = different for each resistor

Question 15

μC to C conversion

Answer 15

x 10⁻⁶

Question 16

Electric Field

Answer 16

POSITIVELY charged particle moves OUTWARD, NEGATIVELY charged particle moves INWARD, neutral particles generate no electric field (voltage)

Question 17

Magnetic Field

Answer 17

ANY charged particle just MOVES (current)

Question 18

Magnetic Flux

Answer 18

The number of magnetic field lines passing through a surface

Question 19

Electromagnet

Answer 19

type of magnet which is created when current flows through a wire coil

Question 20

Permanent magnet

Answer 20

material that retains its magnetic properties after being exposed to a magnetic field

Question 21

Electron Microscopes

Answer 21

electrons are accelerated to very high speeds using high voltages and magnetic fields.

benefit: higher resolving power

Question 22

Blackbody

Answer 22

absorbs all the radiation emitted towards it

Question 23

(wien’s law) peak wavelength λ =

Answer 23

1/T

Question 24

bigger n =

Answer 24

smaller angle, has more atoms

Question 25

white object is

Answer 25

diffusely reflected