Show that the radial function rnt of hydrogen atom has (n -1-1) roots (not taking r=0 and = x). show that for eigenstates of hamiltonian with = n- 1 , n, ln 1,mrn, n 1,m)an(n is fulfilled.

step by step process and good handwriting.

State the right hand rule of the direction of magnetic field in a conductor carrying current

Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2 across a horizontal floor. what is the value of the normal force on the box? 200 n 243 n 156 n 225 n

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?