Aself-contained machine has, as its input, two equal steady streams of a fluid at temperatures t and 47, respectively. the only output is a single high speed jet of the same fluid at temperatures t. the heat capacity per unit mass of the fluid is c (and is independent of the temperature). what is the maximum possible speed of the jet? [hint: the process is irreversible] ст, (a) 4 (b) 4ст (d) ct (с) /2сt

Scientists and engineers design new technologies to solve problems. often, a new technological design will contain a flaw. which of the following is true about such a flaw? a. it should be studied so that the design can be fixed or a new design can be proposed. b. it means that the problem being investigated cannot be solved. c. it means that the people who proposed the design should not be scientists or engineers. d. it makes the technological design useless.