Construct quantum mechanical operators in the position representation for the following observables (1) kinetic energy in the y-dimension (2) kinetic energy in the 3-d space (3) the inverse square separation, x2 (4) electric dipole moment in the 3-d space (5) the z-component of the angular momentum

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

Which missing item would complete this alpha decay reaction ? > 228/88ra + 4/2he a.224/96 rn b. 232/90 th c. 230/92 u d. 235/92 u

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped