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Answer 1

Answer:

The Pauli Exclusion Principle states that, in an atom or molecule, no two electrons can have the same four electronic quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.

Photons, gravitons, gluons are an example of bosons.

h = 6.626 × 10^-34Now ,a/c to de- Broglie equation wavelength Wavelength = h/mvNow mv = 0.1×10=1So ,wavelength =h =6.626 ×10^-34 m.

Answer 2

Answer:

In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity