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NikAS [45]
3 years ago
5

When electrons are moving we call it _______

Physics
1 answer:
agasfer [191]3 years ago
5 0

It *can* be called "Dynamic Electricity".

Hope that helps a little bit XD.

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What is the net force on this object?
Anna35 [415]
:D HI YOUR ANSWER WOULD BE 8 NEWTONS TO DA RIGHT
22N to right + 14N to left 
3 0
3 years ago
Read 2 more answers
How do you find the velocity after a collision
Evgen [1.6K]

Answer:

In a collision, the velocity change is always computed by subtracting the initial velocity value from the final velocity value. If an object is moving in one direction before a collision and rebounds or somehow changes direction, then its velocity after the collision has the opposite direction as before.

Explanation:

7 0
4 years ago
Determine la resistencia equivalente de la "escalera" de
defon

Las respuestas a cada inciso son:

a) La resistencia equivalente de la "escalera" de resistores iguales de 125 Ω que se muestra en la figura adjunta es:

R_{t} = 341.7 \: \Omega

b) La corriente a través de cada uno de los tres resistores de la izquierda si se conecta una batería de 50.0 V entre los puntos A y B es:

  • Correspondiente a R8 y R9 es 0.23 A
  • Correspondiente a R7 es 0.17 A.

a) En la imagen adjuntada correspondiente a la Figura 26-40, podemos observar que las resistencias 1, 2 y 3 están en serie, por lo tanto la ressitencia equivalente entre estas 3 es:

R' = R_{1} + R_{2} + R_{3}

De aquí en adelante tendremos presente que las todas las resistencias son iguales entre sí y por ende igual a 125 Ω. Las notaciones del 1 al 9 son para poder mostrar la resolución del problema.  

Entonces:

R' = 3R

Ahora, esta resistencia está en paralelo con la resistencia R₄, por lo tanto la resistencia equivalente entre estas dos es:

\frac{1}{R''} = \frac{1}{R'} + \frac{1}{R_{4}} = \frac{1}{3R} + \frac{1}{R} = \frac{4R}{3R^{2}}

R'' = \frac{3}{4}R

Luego, esta resistencia está en serie con las resistencias R₅ y R₆, por lo tanto:

R''' = R'' + R_{5} + R_{6} = \frac{3}{4}R + 2R = \frac{11}{4}R

Esta resistencia está ahora en paralelo con R₇, entonces:

\frac{1}{R''''} = \frac{1}{R'''} + \frac{1}{R_{7}} = \frac{4}{11R} + \frac{1}{R} = \frac{15R}{11R^{2}}

R'''' = \frac{11}{15}R

Finalmente, esta resistencis está en serie con las resistencias R₈ y R₉, por lo tanto la resistencia total es:

R_{t} = R'''' + R_{8} + R_{9} = \frac{11}{15}R + 2R = \frac{41}{15}R = \frac{41}{15}*125 \: \Omega  = 341.7 \: \Omega

b) Para este inciso debemos usar la Ley de Kirchhoff, pues tenemos tres mallas. Supondremos que las corriente de cada malla fluiran en sentido horario, por lo tanto las ecuaciones de para cada malla serán:

Malla 1

Segun la ley de Ohm tenemos:

V-i_{1}R-i_{3}R=0 (1)

Malla 2

-i_{2}R-i_{5}R-i_{2}R+i_{3}R=0 (2)

Malla 3

-i_{4}R-i_{4}R-i_{4}R+i_{5}R=0 (3)

Recordemos tambien que:

i_{1}=i_{2}+i_{3} (4)

i_{2}=i_{4}+i_{5} (5)

Lo que debemos hacer ahora es resolver el sistema de ecuaciones y encontrar los valore de las corrientes. Por lo tanto, los valores de las corrientes serán:

i_{1}=3/13\: A

i_{2}=4/65\: A

i_{3}=11/65\: A

i_{4}=1/65\: A

i_{5}=3/65\: A

     

Finalmente:

  • La corriente correspondiente a R8 y R9 es 0.23 A
  • La corriente correspondiente a R7 es 0.17 A.

Pudes aprender mas de mallas aquí:

https://brainly.lat/tarea/11593276

4 0
3 years ago
A child’s toy sits on the bottom of a swimming pool in which the water depth is d=1.8 m. To a child standing at the pool edge, t
navik [9.2K]

Answer:

Horizontal distance is 1.28 + 2.04 = 3.32 m

Explanation:

Given data:

from  below figure

Applying Pythagoras theorem

from Snell's law

\frac{sin i}{sin r} = \frac{n_2}{n_1} = \frac{\frac{EF}{AB}}{\frac{DE}{BD}}

1.33 =\frac{ \frac{2.04}{\sqrt{(3.5 -1.8)^2 + 2.04^2}}}{\frac{x}{\sqrt{1.8^2 + x^2}}}

solving for x we have

x^2 = 1.626

x = 1.28

Horizontal distance is 1.28 + 2.04 = 3.32 m

8 0
3 years ago
The graph shows a car's velocity over time.
OleMash [197]

Answer:

A

Explanation:

It starts from 60 and 50

5 0
4 years ago
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