2. Load the wordcloud package. Generate a word cloud that shows the 30 most frequently used bigrams in 1000 positive reviews (we8thereCounts[1:1000]). Generate a word cloud that shows the top 30 most frequently used bigrams in 1000 negative reviews (we8thereCounts[5166:6166]). Copy and paste the two word clouds below. Here is my example of a word cloud: > dim(we8thereCounts) > badwords=colSums(as. matrix(we8thereCounts[5166:6166,])) > wordcloud(names(badwords), badwords, max. words=30, col=badwords+1)

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2