Se deja caer un cuerpo de 2 kg de masa, desde una altura de 60 metros. Despreciando los rozamientos con el aire. ¿Qué velocidad lleva a una altura de 50 m? ¿Qué velocidad lleva a una altura de 40 m? ¿Con qué velocidad impacta con el suelo?

For which pair of objects would adding the same a

The amount of potential energy possessed by an elevated object is equal to what?

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.