Ahermitian operator a is defined as one for which f av,)dx s(aa)dax, where o and , are any two wavefunctions, and ]* stands for a complex conjugate of [.. ] in which i a) show that the position operator e oo b v-1 is replaced by -i. x is hermitian. hint: since x is a real x, and multiplication by x is commutative so v -x = x- v number b) show that the momentum operator pa is hermitian. hint: use the formula for integration by parts udv dv (dv/dar)da, single particle must have a normalizable wavefunction, which requires that (o0)(o0) = 0. and ihv - /vdu, with u = as well as the fact that any wavefunction corresponding to uv а

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s

answer is slate

hope this