Match the words givne below to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer1. as the child rides in the seat, hisher head and back rest against the padded back of the seat if the car is brought to a rapid stop (as in a head-on collision) the child will continue to at the before-crash speed untl he/she hits something. 2. the object hit is the back of the seat (supporting the entire back and head) which is padded and as a result the small backward increases decreases forward no whiplash a whiplash large to the maximum value over a time interval.3. granted this time interval may but that is considerably better than instantaneous. also since the head is supported, there will . smallb. backwardc. increased. decreasee. forwardf. no whiplashg. a whiplashh. large

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

How do we measure or think of speed in the united states?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.