Describe what kind of wedge a lumberjack would use to cut wood if he wanted to use the least amount of effort possible. a) he would use a wedge that is very long and very broad. b) he would use a wedge that is very short and very broad. c) he would use a wedge that is very long and very narrow. d) he would use a wedge that is very short and very narrow.

Explain the doppler effect in terms of frequency, wavelength, and speed.

Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.