Atomic and Nuclear Physics Answers

Use the uncertainty principle to show that a nucleon which is confined to a region of the order

of ∆x ≈ 1 × 10^−13 cm must have a velocity of the order of 6 × 10^9

cm/s and a kinetic energy

of the order of 20 MeV.

The electromagnetic force holds the protons and neutrons together in the nucleus of an atom.Is this true or false

A stationary proton is moved from point A, where the potential is 450 V, to point B, where the potential is 125 V.

a.) How much work is done by the electric force?

b.) What is its speed at point B?

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Sodium atoms emit a spectral line with a wavelength in the yellow, 589.6mm. What is the difference in energy between the two energy levels involved in the emission of this spectral line? Answer: 2.1eV

In space far enough from earth’s gravity Superman who had a mass 65kg pushes a space station with 5000 Newton’s of force further away from earth, what will happen to Superman and in what direction.

You throw a ball upwards with an initial velocity of 29 m/s. How high will the ball go before it%92s velocity will be zero and it begins to fall and how much time will it take for the ball to reach that height ?

Calculate the radius and energy of the electron in the nth orbital in the hydrogen atom

One of the uranium 235 nuclear fission reactions in a nuclear reactor is the following: n¹_{0 + U}²³⁵_{92 = Zr}⁹¹ _{40 + La}¹⁴²_{58 + x n}¹_{0 + y e}⁰_{-1 . Determine the number of x neutrons and the number of y neutrons produced by this reaction.}

Derive the expression of the Q = ΔE of a nuclear reaction, hence, determine the Q value and the nature of the reaction F19 (H1,α) O16( 18.998405u, 15.994915u, 4.002603u, 1.007825u are masses of F19, O16, α, H1) respectively.

An 'α' particle has an initial velocity of (12 km/s)ˆj+ (15 km/s)ˆkand aconstant acceleration of (2×108m/s2)ˆi in a region where there are uniform electricand magnetic fields. If~B= (4×10−4,0,0) T, what is~E?