The components of an electronic system dissipating 180 w are located in a 1.4- m-long horizontal duct whose cross section is 20 cm × 20 cm. the components in the duct are cooled by forced air that enters the duct at 30°c and 1 atm at a rate of 0.6 m3/min and leaves at 40°c. determine the rate of heat transfer from the outer surfaces of the duct to the ambient.

Which of the following physical laws can make the flow of water seem more realistic? a. motion b. gravity c. fluid dynamics d. thermodynamics

Which text function capitalizes the first letter in a string of text? question 10 options: upper capital first proper

When early motion pictures played in movie theaters, they were often accompanied by live organ or piano music. which of the following are the most likely reasons that this happened? (select all that apply). the music was provided to distract audience members from the loud sounds made when filmstrips were changed. the music accompanied the movies because the movies were silent and audiences were used to hearing music during plays in theaters. the music usually was played before, and sometimes after the movie, as an alternative form of entertainment. the music viewers to interpret the dramatic action in the films.