PLZ PLZ HELP I WILL MARK BRAINLEST! PLZ DUE RIGHT NOW How does Doppler ultrasound technology differ from ultrasound technology that does not use the Doppler effect?

A. Doppler ultrasound is based on absorption of sound, and other ultrasound technology is based on reflection.

B. Doppler ultrasound collects data from moving objects.

C. Doppler ultrasound creates images, but other ultrasound technology does not.

D. Other ultrasound technology creates images, but Doppler ultrasound does not. antis

As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused this symptom?