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romanna [79]
3 years ago
13

UN BARCO NAVAL ENVÍA UNA SEÑAL A UN SUBMARINO QUE SE ENCUENTRA EN EL MAR DEBAJO DEL BARCO, SI ESTA SEÑAL TIENE UNA LONGITUD DE O

NDA DE 0.95CM, VIAJA A 558KM/H Y TARDA 3 SEGUNDOS EN LLEGAR AL SUBMARINO CALCULAR:
a) LA FRECUENCIA DE LA SEÑAL EMITIDA POR EL BARCO

b) EL PERIODO DE LA SEÑAL EMITIDA POR AL BARCO

c) LA PROFUNDIDAD DEL SUBMARINO
Physics
1 answer:
VLD [36.1K]3 years ago
4 0
NOooOoIooOOi Hsushrhndndnrbrbr rgehrbhrhrbr r he rjrnd
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3 years ago
The battery charger for an mp3 player contains a step-down transformer with a turns ratio of 1:38, so that the voltage of 120 v
matrenka [14]
Transformer contains two coils: primary and secondary. They allow change of voltage to lower or higher value. In first case we have step-down and in second case we have step-up transformer.
Formula used for transformer is:\frac{N_{1} }{N_{2}} = \frac{V_{1}}{V_{2}}

Where:N1 = number of turns on primary coilN2 = number of turns on secondary coilV1 = voltage on primary coilV2 = voltage on secondary coil
In a step-down transformer primary coil has more turns than secondary coil. So the ratio 1:38 means that for each turn on secondary coil we have 38 turns on primary coil.
We can solve the equation for V2:V_{2} =  \frac{ V_{1}* N_{2}  }{ N_{1} }  \\  V_{2} =  \frac{ 120* x  }{ 38x} } \\ V_{2} = 3.16V

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4 years ago
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