10.38 A direct-coupled amplifier has a low-frequency gainof 40 dB, poles at 1 MHz and 10 MHz, a zero on the negativereal axis at 100 MHz, and another zero at infinite frequency. Express the amplifier gain function in the form of Eqs.(10.56) and (10.57), and sketch a Bode plot for the gainmagnitude. Does this amplifier have a dominant pole? If so, at what frequency? What do you estimate the 3-dB frequencyto be?

If a particle moves along a path such that r : (3 sin t) m and ? : 2t rad, where t is in seconds. what is the particle's acceleration in m/s in 4 seconds? a)- 16.43 b)- 16.29 c)- 15.21 d)- 13.79

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.