Apower cycle operates between a lake’s surface water at a temperature of 25 °c and water at a depth whose temperature is 6 °c. at steady state the cycle develops a power output of 14 kw, while rejecting energy by heat transfer to the lower temperature water at the rate 14,400 kj/min. determine the thermal efficiency of the power cycle, the maximum thermal efficiency for any such power cycle, and whether the power cycle is possible.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.