1. Sobre cuerpo de m = 250 g actúan dos fuerzas. Una de 3 N hacia la derecha y otra de 1 N hacia la izquierda. Calcular
a) La aceleración con que se mueve.
b) ¿Qué valor deberá tener la fuerza que apunta hacia la derecha si se quiere que deslice con
velocidad constante de 1 m/s.​

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Explanation:

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

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