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iogann1982 [59]
3 years ago
14

In the physics of motion a force acting over a distance is?​

Physics
2 answers:
lutik1710 [3]3 years ago
8 0
A force over distance is work the unite is joules
Elan Coil [88]3 years ago
5 0
Simple a force acting over distance is the unite of joules
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All life that we know of is based on carbon. Carbon's ability to form many chemical bonds is an important characteristic that al
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Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to t
yarga [219]

Answer

The rate at which the magnetic field is changing is  [\frac{dB}{dt} ] =  0.000467 T/s

Explanation

From the question we are told that

   The electric field strength is E =  3.5mV/m =  3.5 *10^{-3} \ V/m

    The radius is  r =  1.5 \ m

The rate of change of the  magnetic  field  is mathematically represented as

        \frac{d \phi }{dt}  =  \int\limits^{} {E \cdot dl}

Where dl is change of a unit length

     \frac{d \phi}{dt}  =  A *  \frac{dB}{dt}

Where A is the area which is mathematically represented as

     A = \pi r^2

    So

    E \int\limits^{} {  dl} =  ( \pi r^2) (\frac{dB}{dt} )  

  E L  =  ( \pi r^2) (\frac{dB}{dt} )  

where L is the circumference of the circle which is mathematically represented as

     L = 2 \pi r

So

     E (2 \pi r ) =  (\pi r^2 ) [\frac{dB}{dt} ]

      E  =   \frac{r}{2}  [\frac{dB}{dt} ]

       [\frac{dB}{dt} ] = \frac{E}{ \frac{r}{2} }

substituting values

      [\frac{dB}{dt} ] = \frac{3.5 *10^{-3}}{ \frac{15}{2} }

      [\frac{dB}{dt} ] =  0.000467 T/s    

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3 years ago
How does the friction get affected by the nature of surface?
aleksley [76]

Answer:

The heat causes the molecules on rubbing surfaces to move faster and have more energy.

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¿Cuál es la frecuencia de una nota musical cuyo periodo es 0,005 s?
AlekseyPX

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La respuesta sería 200Hz

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