Refrigerant 134a at 800kPa and 25*C is throttled to a temperature of -20*C. Determine the pressure and the internal energy of the refrigerant at the final state.

Which of the following are guidelines to follow for obtaining accurate observations

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical

Aweather forecaster uses doppler radar to predict the track of a storm near the town of meadowlands. when the doppler signal is pointed at the storm from the town's center, the frequencies of the waves appear to be decreasing. what should the weather forecaster predict? a. that the storm will move around the edges of meadowlands without hitting the tosis center o b. that residents should be prepared, because it is impossible to know whether the storm will hit o c. that the storm is moving toward meadowlands and that residents should be prepared d. that the storm is moving away from meadowlands and is not likely to hit the town