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Which of the statements below is true? a. The standard model unifies all 4 known

ID: 1998056 • Letter: W

Question

Which of the statements below is true?

a.

The standard model unifies all 4 known interactions, the strong, the electromagnetic, the weak, and the gravitational interaction.

b.

Using only up, down, and strange quarks, is it possible to construct a baryon with Q = 1 and S = -2?

c.

Using only up, down, and strange quarks, is it possible to construct a baryon with Q = 2 and S = 0?

d.

In vacuum, a proton can spontaneously by the following decay process:
p --> n + e+ + e.

a.

The standard model unifies all 4 known interactions, the strong, the electromagnetic, the weak, and the gravitational interaction.

b.

Using only up, down, and strange quarks, is it possible to construct a baryon with Q = 1 and S = -2?

c.

Using only up, down, and strange quarks, is it possible to construct a baryon with Q = 2 and S = 0?

d.

In vacuum, a proton can spontaneously by the following decay process:
p --> n + e+ + e.

Explanation / Answer

Here the option (d) is true

Because,the decay is a week interaction process.There might be a concern that it will not be rapid enough to occur during the primary protons flight to earth.

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