.Centrifúga na výcvik kozmonautov dosiahla frekvenciu otáčania 36\,min^{-1}36min −1
. Polomer otáčania je 7\,m7m. Určte veľkosť tlakovej sily, ktorou kozmonaut pôsobí na operadlo kresla, ak hmotnosť kozmonauta je 70\,kg70kg.

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states

How are elastic and inelastic collisions different? give two or more ways. your answer should have at least 2 sentences.