Agroup of inexperienced weightlifters was randomized to either perform crossfit or olympic lifting workouts for 10 weeks. we then determined whether or not each participant increased their one repetition maximum (1rm) by more or less than 15%. what statistical test should be used to determine if the proportion of participants that increased their 1rm by more than 15% is higher in those performing crossfit or olympic lifting?

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

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

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical