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AP Physics 2 Videos 59 videos

AP Physics 2: 1.5 Systems Interactions and Changes
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AP Physics 1.5 Systems Interactions and Changes. Which of the following statements is true?

AP Physics 2: 2.1 Fields in Space
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AP Physics 2: 2.2 Object Interaction and Forces
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AP Physics 2: 2.4 Properties of Objects and Systems 166 Views


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AP Physics 2: 2.4 Properties of Objects and Systems. How could you show the carnival barker an emission spectrum?

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Transcript

00:00

Hurry And here's your shmoop too sure brought to you

00:05

by carnival barkers And no we don't mean dogs that

00:08

run the tilt a world machine Yeah Different All right

00:12

At the carnival barker offers to give a machine that

00:14

makes hydrogen atoms to anyone who can show him any

00:16

mission spectrum How could we do this and win the

00:19

machine like let's Make a deal All right And here

00:22

the potential answers Interesting That split hired an atlantic good

00:28

one All right we've seen the ring toss and the

00:30

game where you throw darts at balloons But we've never

00:33

seen the emission spectrum game but what's in a mission

00:36

spectrum First of all well when energy is added to

00:39

an atom the electrons in orbit get all worked up

00:43

They jump up into the next orbital energy level Like

00:46

us when we get all sugared up Yeah but eventually

00:49

they go back down to a lower level When they

00:51

go back down to a lower level of energy the

00:53

electrons emit a photons will The wavelength of the photon

00:56

is determined by the amount of energy lost when it

00:59

moves down and that wavelength determines the color of the

01:02

light That we see or don't see the wave length

01:07

can produce infrared or ultraviolet light that's invisible to us

01:11

that the correct answer is a way have to get

01:14

those electrons jumping up in order to make them fall

01:17

back down in its unexcited state We can't remove energy

01:20

from it so b is out and putting two hydrogen

01:24

atoms together isn't going to do much Maybe they'll become

01:26

friends and hang out together but well that won't produce

01:29

any photons so see won't work And if we split

01:32

the atom like answer d says well that might make

01:35

the whole carnival go Kaboom yeah that's what would happen

01:38

so no to get an emission spectrum we have to

01:42

get electrons all hopped up so they convention fall back

01:45

down So the correct answer is a

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