Illustration 4.27 In the figure shown below, what type of collision can be possible, if K = 14 eV, 20.4 eV, 22 eV, 24.18 eV (elastic/inelastic/perfectly inelastic). Neutron >K, v Hatom at rest in ground state and free to move Head on collision Fig. 4.25

In the figure , what type of collision can be possible , if K = 14 eV, 20.4 eV,22 eV, 24.18 eV,(elastic // inelastic // perfectly inelastic).

In the figure , what type of collision can be possible , if K = 14 eV, 20.4 eV,22 eV, 24.18 eV,(elastic // inelastic // perfectly inelastic).

A free hydrogen atom in its ground state is at rest. A neutron having kinetic energy k_(0) collides head one with the atom. Assume that mass of both neutron and the atom is same. (a) Find minimum value of k_(0) so that this collision can be inelastic. (b) If k_(0) = 25 eV , find the kinetic energy of neutron after collision if its excites the hydrogen atom to its second excited state. Take ionization energy of hydrogen atom in ground state to be 13.6 eV .

A hydrogen atom (mass = 1.66 xx 10^(-27) kg "ionzation potential" = 13.6eV) , moving width a velocity 6.24 xx 10^(4) m s^(-1) makes a completely inelastic head-on collision with another stationary hydrogen atom. Both atoms are in the ground state before collision . Up to what state either one atom may be excited?

A hydrogen atom (mass = 1.66 xx 10^(-27) kg) ionzation potential = 13.6eV), moving with a velocity (6.24 xx 10^(4) m s^(-1) makes a completely inelastic head-on collision with another stationary hydrogen atom. Both atoms are in the ground state before collision . Up to what state either one atom may be excited?

Assuming that the mass of proton is nearly equal to mass of neutron the minimum kinetic energy in 10^(1) eV of a neutron for inelastic head on collision with a ground state hydrogen atom at rest is -

Suppose a ball is projected with speed u at an angle alpha with horizontal. It collides at some distance with a wall parallel to y-axis. Let v_(x) and v_(y) be the components of its velocity along x and y-directions at the time of impact with wall. Coefficient of restitution between the ball and the wall is e . Component of its velocity along y -diection (common tangent) v_(y) will remain unchanged while component of its velocity along x -direction (common normal) v_(x) will become ev_(x) is opposite direction. The situation shown in the figure a small ball is projected at an angle alpha between two vertical walls such that in the absence of the wall its range would have been 5d . Given that all the collisions are perfectly elastic (for first and second problems), the walls are supposed to be very tall. The total time taken by the ball to come back to the ground (if collision is inelastic) is