A charge of -3.50 nC is placed at the origin of an xy-coordinate system, and a charge of 1.95 nC is placed on the y axis at y = 3.55 cm. Part A
If a third charge, of 5.00 nC, is now placed at the point x = 2.85 cm , y = 3.55 cm find the x and y
components of the total force exerted on this charge by the other two charges.
Part B
Find the magnitude of this force.
Part C
Find the direction of this force.

Consider the particle-in-a-box problem in 1d. a particle with mass m is confined to move freely between two hard walls situated at x = 0 and x = l. the potential energy function is given as (a) describe the boundary conditions that must be satisfied by the wavefunctions ψ(x) (such as energy eigenfunctions). (b) solve the schr¨odinger’s equation and by using the boundary conditions of part (a) find all energy eigenfunctions, ψn(x), and the corresponding energies, en. (c) what are the allowed values of the quantum number n above? how did you decide on that? (d) what is the de broglie wavelength for the ground state? (e) sketch a plot of the lowest 3 levels’ wavefunctions (ψn(x) vs x). don’t forget to mark the positions of the walls on the graphs. (f) in a transition between the energy levels above, which transition produces the longest wavelength λ for the emitted photon? what is the corresponding wavele

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?

Which is the most accurate name for the covalent compound p2o3?