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LenaWriter [7]
3 years ago
11

How can i open leaderboards column in brainly

Physics
1 answer:
natta225 [31]3 years ago
6 0

Answer:

Go to the answers column there you will see on the top, it is writen Meet Our Leaders then click on it and then leaderboards column will appear.

Explanation:

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Where are the reproductive parts of a plant located?
Mkey [24]

Answer:

<h2>Flower </h2>

Explanation:

<h2>The flowers are the reproductive parts of a plant. Stamens are the male reproductive part and pistil is the female reproductive part.</h2><h2 />
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A wave has a wavelength of 5 meters and a frequency of 3 hertz. What is the speed of the wave?
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Which of the following best describes how galaxies exist in the universe?
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4 0
3 years ago
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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
What happens to rocks as water combines
insens350 [35]
The answers is
D. The acid creates cracks in the rocks, which
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