Abjt differential amplifier, biased to have re = 50  and utilizing two 50- emitter resistors and 5-k loads, drives a second differential stage biased to have re = 50 . all bjts have β = 100. what is the voltage gain of the first stage? also find the input resistance of the first stage, and the current gain from the input of the first stage to the collectors of the second stage

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.