Acircular sign has a diameter of 50 cm and is subjected
tonormal winds up to 150 km/h at 10 deg c and 100 kpa. determine
thedrag force acting on the sign. also determine the bending moment
atthe bottom of its pole whose height from the graound to the
bottomof the sign is 1.5 m. disregard the drag on the pole.

What precautions should you take to prevent injuries when dealing with heavy loads?

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk