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Oksi-84 [34.3K]
2 years ago
5

Para investigar - Posición del cuerpo en general. - Posición de la cabeza. - Posición de los brazos y manos. - Apoyo de los pies

. - Como deben ser los movimientos.
Physics
1 answer:
Korolek [52]2 years ago
4 0

Answer:

Algunos se mueven en dos direcciones y algunos se mueven en las cuatro direcciones.

Explicación:

Para investigar la posición del cuerpo en general, la posición de la cabeza, la posición de los brazos y manos y los pies tienen algunos movimientos específicos. Algunos se mueven hacia arriba y hacia abajo significa en dos direcciones mientras que el otro se mueve en todas las direcciones. Los brazos se mueven solo hacia adelante y hacia atrás, mientras que, por otro lado, los pies, la mano y la cabeza se mueven hacia la izquierda, la derecha y hacia arriba y hacia abajo.

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For what absolute value of the phase angle does a source deliver 71 % of the maximum possible power to an RLC circuit
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Explanation:

taking a look at expression for the instantaneous electric power in an AC circuit;

P = VI -------let this be equation 1

p is power, v is voltage and I is current;

for maximum power

P_max = V_rms × I_rms --------let this be equ 2

where P_max is the maximum power, V_rms is the rms value of voltage and I_rms is the rms value of current.

Also for average electric power in an AC circuit

P_avg = V_rms × I_rms × cos²∅ -------let this be equ 3

where P_avg is the average power and cos∅ is the power factor

now from equation 2;  P_max = V_rms × I_rms

so p_max replaces V_rms × I_rms in equation 3

we now have

P_avg = P_max × cos²∅

so we substitute

expression for the given value of the average power is

P_avg = P_max × 75%

p_avg = P_max.78/100

for the expression of the average electricity in an AC circuit

P_max.78/100 = P_max × cos²∅

78/100 = cos²∅

to get the absolute value of phase angle

∅ = cos⁻¹ ( √(78/100))

∅ =  cos⁻¹ ( 0.8832)

∅ = 27.969 ≈ 28°

Therefore the absolute value of the phase angle is 28°

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