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arrichardson787
20.09.2020 •
Chemistry
If one end of an iron bar is heated, what causes thermal energy to transfer to the other end? a radiation b conduction c heat of fusion d convection
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Ответ:
Option B:
Conduction
Explanation:
Conduction is the transfer of heat from one molecule to another between two solids that are in direct contact with each other. For the conduction of heat to occur, the medium involved must be solid. This is because the molecules of solids are closely packed together and they cannot freely move about. The heat flowing through them can easily be passed on from one molecule to the other until it reaches all the parts of the object. This is exactly what will happen to the iron bar. Thermal energy from one end of the bar will get transferred between the molecules of the iron bar until it reaches the other end.
Convection on the other hand involves the transfer of heat through a liquid medium.
Radiation involves teh transfer of heat in a vacuum.
Ответ:
Los partidos políticos, con el fin de lograr o recuperar la credibilidad ante los ciudadanos, deben llevar a cabo tres importantes medidas:
Hacer promesas creíbles: a pesar de que muchos piensan lo contrario, los ciudadanos suelen reconocer cuando están siendo engañados y les están prometiendo cosas imposibles de llevar a cabo, por esta razón, es importante, que los partidos políticos solo prometan cosas que realmente pueden llevar a la práctica.Cumplir en la medida de lo posible esas promesas: una vez el partido político accede al poder, este debe hacer todo lo posible por cumplir las promesas de campaña. Sino lo hacen, los votantes se sentirán defraudados y la credibilidad del partido disminuirá.Estar conformado por personas competentes que no sean corruptas: si los miembros del partido no están capacitados, no harán su trabajo bien, y el partido perderá credibilidad. Y sobra decir que un escándalo de corrupción es quizás lo que más reduce la credibilidad de un partido frente a sus votantes.