Determine whether quartz or plagioclase feldspar is more likely to form a well shaped crystal in an igneous rock

1 answer:

5 0

The key to molding a well-shaped crystal is that the mineral needs to have space to grow. The minerals that freeze out of a melt first (these are the ones with high melting points) form nice crystals, while the ones with lower melting points can't make nice crystals since they run into the crystals of other minerals that already froze out. The answer can be found in the Bowen Reaction Series. In here, you will see that that quartz crystallizes at a lower temperature than plagioclase.

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A particle of mass M is moving in the positive x direction with speed v. It spontaneously decays into 2 photons, with the origin

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Solution :

Mass of the particle = M

Speed of travel = v

Energy of one photon after the decay which moves in the positive x direction = 233 MeV

Energy of second photon after the decay which moves in the negative x direction = 21 MeV

Therefore, the total energy after the decay is = 233 + 21

= 254 MeV

So by the law of conservation of energy, we have :

Total energy before the decay = total energy after decay

So, the total relativistic energy of the particle before its decay = 254 MeV

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Why are we able to use nuclear energy for practical purposes? The reactions are controlled to regulate energy output. The reacti

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Answer: The reactions are controlled to regulate energy output

Explanation:

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If a current of 2.4 a is flowing in a cylindrical wire of diameter 2.0 mm, what is the average current density in this wire?

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The average current density in the wire is given by:

$J=\frac{I}{A}$