You are in a place that is extremely hot and dense, making you feel quite sweaty and claustrophobic. you can't see far because your surroundings are opaque to light. around you, nuclear fusion is converting carbon into oxygen and other elements. where are you?
a. you are in the center of a star very much like our sunb. you are in the early universe during the era of nucleosynthesisc. you are inside a nuclear power plant on earth. d. you are in the center of a massive star near the end of its life. e. you are in the center of a star much smaller than the sun

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

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?