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sertanlavr [38]
3 years ago
8

How does a free-body diagram tell you about the net force on an object?

Physics
2 answers:
Citrus2011 [14]3 years ago
3 0
A free-body diagram shows the vectors for all the force acting on the body the resultant vector found by summing all the individual vectors represents the net force.
lbvjy [14]3 years ago
3 0
<span>Using Diagrams to Depict ForcesWhen learning about force diagrams, you saw that scientists draw a diagram using arrows to show the type and size of the force.<span> The object is shown as a small box or dot from which the arrows originate.</span><span> These diagrams are also called </span><span>free-body diagrams </span>.<span> A "free body" is one object drawn all by itself, even though that object is likely to be in contact with other objects.</span> This way you can focus all your attention on what is happening to that one object.<span> </span></span>
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The electrons in the beam of a television tube have an energy of 19.0 keV. The tube is oriented so that the electrons move horiz
igomit [66]

Answer:

The direction is due south

Explanation:

From the question we are told that

     The energy of the electron is E = 19.0keV = 19.0 *10^3 eV

      The earths magnetic field is B = 42.3 \muT = 42.3 *10^{-6} T

     

Generally the force on the electron is perpendicular to the velocity of the elecrton and the magnetic field and this is mathematically reresented as

          \= F = q (\= v * \=B)

On the first uploaded image is an  illustration of the movement of the electron

    Looking at the diagram  we can see that in terms of direction  the magnetic force  is

             \= F  =q(\=v * \= B)= -( -\r i * - \r k)

                = -(- (\r i * \r k))

generally  i cross k = -j

      so the equation above becomes

             \= F = -(-(- \r j))

                = - \r j

This show that the direction is towards the south  

 

3 0
3 years ago
How do stars serve as evidence for the expansion of the universe and the Big Bang theory?​
castortr0y [4]

Answer:

The Doppler red-shift of light observed from distant stars and galaxies gives evidence that the universe is expanding (moving away from a central point). This allows for Big Bang Theory, because after a “bang” occurs all of the matter moves away from the point of origin.

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LiRa [457]

Answer:

High density D answers to your questions

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1) True 2) True 3)True I hope I helped
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Heat energy moves:_______.
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c) only from warmer areas to colder areas.

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