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2024-11-13

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PoliEcho 2024-11-13 13:54:51 +01:00
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commit ee4e7bab37
11 changed files with 1258 additions and 0 deletions
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3
CJL/etymologie Normal file
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Jméno Lukáš: Lucas pochází z latinského názvu jihoitalské oblasti Lukánie a označuje jejího obyvatele.
Příjmení Mašata: je odvozeno z osobních jmen, která začínají na Ma-: především Matěj, dále Mauritius, apod. Základním příjmením je Máša

9
ELE/2024-11-13-odpory.txt Normal file
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12/11 = 2A
R*I = U
R:
2*2 = 4
4*2 = 8
5*2 = 10

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ELE/du/du.kicad_pcb Normal file
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(unit 1)
)
)
)
)
(sheet_instances
(path "/"
(page "1")
)
)
)

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2000 mAh = 2Ah = 7200 C
20 kwh = J
15 mC = Ah
86000 J = wh
1000 mAs = mAh
10MJ = kwh
P = w * t
w = P / t

40
FYZ/2024-11-11-rovnomerny-pohyb-po-krznici.txt Normal file
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Rovnomerny pohyb po krznici
periodicky pohyb
T perioda (doba oběhu)
[T] = s
f frekvence
[f] = Hz
f = 1/T
rychlost
→
v ma velikost a smer
v = const
s = r * f
Φ merime v radianech rad 1 rad: delka
1 rad = 57°18'
uhova rychlost
→
ω
ω = ΔΦ/Δt
[ω] = rad/s
ω = 2pi/T = 2pi*f
v = s/t = pi*Φ/t
v = pi*ω
hmotny bod kona rovnomerny pohib po kruznici o polomeru 0,5m s frekvenci 4Hz
vypocitejte: obeznou dobu
0.25s
uhlovou rychlost
25.133 rad/s
rychlost
f*T = 1
T = 1/f
T = 0.25s

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FYZ/2024-11-11.txt Normal file
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kroupy padají na ze rychlosti 100m/s, Z jake vysky padaji
s = 1/2*g*t²
v= g*t
100 = 10 * t
t = 10s
s = 1/2*10*100
s = 500m
jak hluboká je propast jestly že volně padajíci oběkt pada na zem 5.25s
s = 1/2*10*27,562i
s = 137.81m
Skládání pohybů
po vodorovne trati jede vlak stalou rychlosti 15m/s kapky padaji ve svislemm smeru ryhlosti 8m/s
a) rychlost kapek vzhledem oknům vlaku
b) uhel ktery sviraji stopy kapek na okně
61.928
v₁ = vlak 15m/s
v₂ = kapky 8m/s
tg alfa = v₁/v₂
alfa = 61.928
v = √25² + 8²
v = 17m/s
clun se pohybuje vzhledem vode 13m/s vodni proud je 5m/svislemm
a) pod jakým uhlem vzhledem k vodnimu produ
112°37'
b) jak rychle jede k druhemu brehu
12m/s
v = √(13² - 5²)
v = 12m/s
v1 = 13m/s
v2 = 5m/s
sin beta = 5/13
beta = 22°37'
alfa = 112°37'

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