The nucleus of a 125xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. it has 54 protons and charge q=+54e (1 fm = 1 femtometer = 1×10−15m.) hint: treat the spherical nucleus as a point charge. part a part complete what is the electric force on a proton 1.0 fm from the surface of the nucleus? express your answer in newtons. fnucleusonproton f n u c l e u s o n p r o t o n = 780 n submitprevious answers answer requested part b what is the proton's acceleration? express your answer in meters per second squared.

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.