Equivalent resistance between A and B.
A) 2.4 ohms
B)18 ohms
C) 6 ohms
D) 36 ohms
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Ответ:
First of all see the attachment for better understanding :D
Eq. resistance between C and D :
➝ 1/Rp = 1/6 + 1/6
➝ 1/Rp = 2/6
➝ Rp = 3Ω
Eq. resistance of upper part :
(All three are in series)
➝ Rs = 3 + 3 + 3
➝ Rs = 9Ω
Eq. resistance of lower part :
(Both are in series)
➝ Rs' = 3 + 3
➝ Rs' = 6Ω
Eq. resistance between A and B :
(Rs and Rs' are in parallel)
➝ 1/Req = 1/Rs + 1/Rs'
➝ 1/Req = 1/9 + 1/6
➝ 1/Req = (2 + 3)/18
➝ Req = 18/5
➝ Req = 3.6ΩОтвет:
the brightest found are Blue - White with
Explanation:
The energy emission of objects increases with their temperature, specifically Wien described the process in an expression
T = 2,898 10⁻³
With this expression we can find the temperature of the stars by the color they emit.
Specifically the Sun has a color of 550 nm which corresponds to 5400K
bright stars have a BLUE color corresponding to 7500K
the brightest found are Blue - White with a temperature of 20000K