(TCO 1) A four-input summing amplifier has all input resistors at 2.2 kw9_test_image_1.gif, each input with equal gain, and the feedback resistor equal to 2.2 kw9_test_image_1.gif. If the input voltages are all equal to 1 V, what is the gain of the amplifier?

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