Se desea enfriar 1000 lb/h de una corriente de etileno (C2H4) gaseoso que se encuentra a 300 0C en un enfriador que opera a régimen permanente, si la temperatura de salida es de 50 0C. Calcular la carga térmica del enfriador si el enfriamiento se lleva a cabo con agua líquida que se encuentra inicialmente a 20 0C y cuya temperatura no debe de aumentar más de 10 0C. (Base una hora de operación). Nota: Cp (C2H4) = 13.65 cal/mol °C

What type of nuclear decay causes the atomic number of an element to increase by 1?

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?

An object's buoyant force and weight mean the same thing.a. trueb. false